Moisture should be kept out of an R-12 system because it tends to cause _____.A.icing of t

A.A.in twenty boxes

B.B.in the waterproof cloth

C.C.in the carton

A、dry

B、waterproof

C、wet

ivers？

A.Drain the accumulated moisture

B.Test the relief valves

C.Watch the temperature to prevent fluctuations in pressure

D.Clean the interior to remove oil and foreign matter

February 1, 2015 Dear Ms. Lin, Special Requirements for Packing (Order No. MI 063) With reference to the order of woolen gloves above, the packing instructions1 (list) as follows: The woolen gloves 2 (pack) in twenty boxes, and the boxes3 (pack) in a carton. All the boxes 4 (put) close together inorder to avoid being flattened. The carton 5 (line) with waterproof cloth inside and 6(strap) with metal bands outside, which is strong enough for seatransportation. Small holes 7 (make) in the waterproof cloth to let the moistureout. Please 8 (follow) the packing instructions above. Thank you foryour attention. Yours sincerely, Daniel Anderson

1. The woolen gloves should be .()

A. packed in a carton

B. strong enough

C. packed in twenty boxes

2. All the boxes were put close together .()

A. for sea transportation

B. to avoid being crushed

C. to be in good order

3. The carton was strapped with metal bands outside .()

A. to be strong enough

B. to let the moisture out

C. to be waterproof

4. To let the moisture out, small holes should be made .()

A. in twenty boxes

B. in the waterproof cloth

C. in the carton

5. The main purpose of the letter is to .()

A. order woolen gloves

B. follow packing instructions

C. make packing instructions

n the design of our mural, lets review some of the technical requirements for murals. What factors do we need to keep in mind？ Yes, Lydia？ W2: The mural has to be permanent. It has to last as long as the building. And it has to be sturdy enough to put up with conditions like the walls being washed. W1: Good points. Yes, David？ M: It should have a flat finish so you can look at it from all angles without seeing any glare. And the design should be laid out so you can see it while youre walking rather than standing still. W1: Yes, those are all things we need to bear in mind. We want people to take in our mural—all of it—from a moving position, since theyll be observing it as they walk through the lobby to the elevators. And lets not forget that our mural is more than just a large-scale work of art done on a wall instead of a canvas. The term "mural" implies a distinct feeling or nature, a quality thats appropriate to the architecture and the function of the room. A mural is an integral part of the building. If its painted in an existing building, like ours will be, it should be planned to fit into the architectural design, instead of giving the impression that its a surface decoration. Now, what are some of the technical requirements for our wall？ M: Obviously, the wall shouldnt move. It shouldnt shrink or settle because that could cause cracks in the paint or plaster. W1: Yes, its vital that our wall be perfectly immovable. And for murals like ours—remember, our mural will be on the interior side of an exterior wall—another important requirement is that dampness should be excluded. Dampness can result from water seeping through porous materials or through joints, corners, or flaws in the building construction. When water leaks through a wall, it may dissolve the salts that are in the building materials. When the moisture dries, the salts are deposited in the form. of white, moldy-looking film on the surface of the plaster. This greatly weakens the plaster, which can crumble or crack, and, of course, its disastrous to the mural. W2: Can moisture make the paint peel off？ W1: Yes, it can. When moisture penetrates a wall coated with paint, it causes the plaster to expand and the paint to peel off—either in small flakes or in big pieces. And we dont want that happening to our work, so well need to take measures to prevent it. Our goal will be to reduce expansion of the plaster and to lessen the condensation of moisture on the surface. So our first rule is to exclude dampness as much as possible. M: Dont we also need to guard the plaster from extreme changes in temperature？ W1: Yes. So, how are we going to do this？ M: We could create an air space between the outer wall of the building and the plaster. We could do this by building a screen or, urn, like a false Wall just inside the exterior wall, and then we put the plaster for the mural on this false wall. Thered be like an inch of air space between the false wall and the exterior wall. The air space would have an insulating effect. What I mean is, it would slow down any temperature changes on the plaster. W1: Yes, youre correct about the insulating effect of an air space. Now, to do this—its called "furring" the wall—what we do is, we attach thin strips of wood to the exterior wall, and then we build another wall on top of this. The furring of the wall creates an air space of one-half to one inch between the outer and inner walls. Thats enough to protect our mural from moisture and temperature changes, as well as the mechanical strains and stresses of the wall itself.Art Murals

Why is the class discussing the technical requirements of murals？

A．They are preparing for an examination.

B．They plan to visit some famous murals.

C．They are helping to design a new building.

D．They will be creating their own mural.

Dry skin is characterized by dull and rough appearance. Some individuals are born with dry skin, while others develop it over time, due to a host of factors. Dry skin tends to age faster as it lacks the necessary oil and moisture to keep it soft. Individuals may develop dry skin due to overexposure (过渡曝光) to sunlight, harsh climatic conditions like severe cold or heat, or artificial( 人工的 ) room heating or cooling. An improper skin care, especially the overuse of soap or face wash, or no skin care at all can also lead to dull skin.

For people with dry skin, warm water should be used for bathing. An oil massage for the face and the body, using either olive or almond oil is recommended before bathing. A suitable moisturizer(湿润剂) and a body lotion should be applied after bathing. Sunscreen cream (防晒霜) must not be forgotten while going out during the day. Apart from external care, a healthy diet that includes nuts, vegetables, and fruits can prevent premature aging of dry skin. Intake of carrots, eggs, and milk is especially recommended. Daily intake of at least eight glasses of water, and adequate sleep are also vital aspects of skin care. Fried food, soft drinks, excessive tea and coffee, and smoking and alcohol are harmful for skin. Therefore, these should be avoided.

听力原文：M: Welcome back, I didn't see you in math class on Friday.

W: I wasn't here on Friday. My geology class went on a field trip to look at some of the different rock formations here in California. Our last stop was Death Valley. In fact, We camped there last night.

M: Death Valley？ But that's desert. Wasn't it much too hot for camping？

W: No, not really. It gets hot during the day, but it cools off very quickly at night. There is no moisture in the air to hold the heat after the sun goes down. If it were humid, it would stay hot all night.

M: Well, did you enjoy the trip？

W: It was fascinating. 'The desert is nicer than you might think. Since there is so little vegetation growing, it's very easy to see different rock layers, folds and such, and the natural colors of rocks are wonderful. The rocks have made brilliant colors, blues, pinks and greens. You really should go to see it sometime.

(20)

A．Preparing for rite math exam.

B．Viewing an art exhibit.

C．Participating in a special class activity.

D．Packing for her vacation.

e answer is no.Actually, it is the processing of tea that finally decides the tea types.For example, black tea requires 100% oxidation and green tea requires almost no oxidation.So tea processing is quite an important factor in the production of tea.Anyway, the normal processing of tea includes the following four basic steps:

1.New leaves are spread in order to reduce water content until they are pliable enough to be rolled.This process is called withering.

2.The second step is rolling the withered leaves.Oils and extra moisture are released.This process can be done with machinery or by hand.

3.The third step is called oxidation or fermentation.In this process the leaves turn from green to bright copper in colour.This step decides what type of tea we want.

4.The last step is drying the leaves to stop the oxidation process.The leaves should be dried thoroughly without burning.

Decide each statement is T (true) or F (false) based on Passage B.

6.The processing of tea decides the tea types.

7.Green tea requires a little oxidation.

8.Withering makes the tea leaves release oils and water.

9.Rolling the withered leaves can be done only with machinery.

10.Burning the leaves is the last step of tea processing.

A、k

B、k/2

C、k-squared (k的平方）

D、the square root of k（k的平方根）