The safety stopper that prevents the anchor cable from running free if the cable jumps the

The riding pawl is ______．

A.a safety interlock in a cargo winch that prevents the runner from overspeeding

B.a stopper that prevents the anchor cable from running free if the cable jumps the wildcat

C.the device that locks the deck lashings of the Peck and Hale system

D.the lug that rides on the eccentric rib and engages the locking ring on the windlass

They () until the bell rang

a stopper on shout

b stopped shouting

c didn’t stop shouting

d didn’t stop shout

A.Ce reportage décrit la pollution plastique et son impact sur l’Antarctique et la vie marine. Les scientifiques chinois ont mis au point une technique pour absorber les déchets.###SXB###B.Ce reportage décrit la pollution des océans causée par les microparticules de plastique, libérées lors du lavage des vêtements. Il est possible d’installer un filtre sur son lave-linge pour stopper ce phénomène.###SXB###C.Ce reportage compare les fibres synthét

problems with it？

B: Yes, Professor Smith. We did.

S: Who's your lab partner, Bob？

B: Anne Wilson.

S: Well, Anne, can you and Bob go over the procedure for the class？

A: Sure. Firs(we put ten grams of crushed limestone in a bottle.

S: Anything special about the bottle？

B: It was a gas - collecting bottle with a one - hole stopper and bent glass tubing.

S: Very good. So you put the limestone in a gas - collecting bottle. Then what？

A: Then we poured in ten milligrams of hydrochloric acid, put on the stopper, and collected a bottle of carbon dioxide.

S: Right, What was the method of collection？

A: Water displacement.

S: Good.

A: Then, we lit a magnesium ribbon and put it in the bottle or carbon dioxide.

B: And carbon deposits began to form. on the bottom of the bottle, You see, we didn't have any problem with procedure.

A: Well, we had a little problem getting the magnesium ribbon to stay lit until we could get it into the bottle.

B: Okay. But we did it. The big problem was that we really didn't understand what happened. Did the magnesium combine with the oxygen in the carbon dioxide？

S: You have just answered your own question, Bob. The burning magnesium broke the carbon - oxygen bonds in the carbon dioxide, and then the oxygen combined with the magnesium to produce magnesium oxide.

A: And the carbon was freed to deposit itself on the bottle.

S: Exactly.

(23)

A．To discuss the results of the lab experiment.

B．To answer Bob' s question about the lab experiment.

C．To explain the method of collection by water displacement.

D．To prepare the students to do the lab experiment.

roblems with it？

B: Yes, Professor Smith. We did.

S: Who's your lab partner, Bob？

B: Anne Wilson.

S: Well, Anne, can you and Bob go over the procedure for the class？

A: Sure. First we put ten grams of crushed limestone in a bottle.

S: Anything special about the bottle？

B: It was a gas-collecting bottle with a one-hole stopper and bent glass tubing.

S: Very good. So you put the limestone in a gas-collecting bottle. Then what？

A: Then we poured in ten milligrams of hydrochloric acid, put on the stopper, and collected a bottle of carbon dioxide.

S: Right, what was the method of collection？A: Water displacement.

S: Good.

A: Then, we lit a magnesium ribbon and put it in the bottle of carbon dioxide.

B: And carbon deposits began to form. on the bottom of the bottle, you see, we didn't have any problem with procedure...

A:WeI1, we had a little problem getting the magnesium ribbon to stay lit until we could get it into the bottle.

B: Okay. But we did it. The big problem was that we really didn't understand what happened. Did the magnesium combine with the oxygen in the carbon dioxide？

S: You have just answered your own question, Rob. The burning magnesium broke the carbon -oxygen bonds in the carbon dioxide, and then the oxygen combined with the magnesium to produce magnesium oxide.

A: And the carbon was freed to deposit itself on the bottle.

S: Exactly.

What is the purpose of this class discussion？

A．To discuss the results of the lab experiment.

B．To answer Bob's question about the lab experiment.

C．To explain the method of collection by water displacement.

D．To prepare the students to do the lab experiment.

阅读理解

阅读下面的文章，根据文章内容判断文章后的句子是正确(T)还是错误(F)。

THE INTERNATIONAL FOOD SAFETY AUTHORITIES NETWORK (INFOSAN)

With the rapid globalization of food production and trade, international issues related to food safety are likely to increase. Food safety authorities all over the world have realized that food safety problems should be carried out at both national and international levels. There is a pressing need for exchanging routine information on food safety issues, and sharing experiences and information quickly when a food safety related event takes place.

INFOSAN is a joint program between the World Health Organization (WHO) and the Food and Agriculture Organization of the United Nations (FAO). This global network includes 181 Member States. Each has a designated INFOSAN Emergency Contact Point which manages communication between national food safety authorities.

The network aims to:

Promote the rapid exchange of information during food safety related events;

Share information on important food safety related issues of global interest;

Promote partnership and cooperation between countries;

Help countries strengthen their capacity to manage food safety risks.

As part of its routine activities, the INFOSAN Secretariat publishes reports in six languages and provides members with summaries and guidance on relevant food safety issues.

INFOSAN helps exchange food safety information and experience among its members. It is also a useful resource for other public health organizations which recognize INFOSAN as an organization through which findings of investigations and strategies for improving food safety may be shared.

INFOSAN monitors possible international food safety related events in close cooperation with the WHO Alert and Response Operations program. INFOSAN can work with other international organizations to provide assistance to the countries or regions with emerging food safety events of possible international concern.

操作提示：句子正确选择下拉选项框为“T”;句子错误选择下拉选项框为“F”。

1. It is probable that there will be more and more safety related issues worldwide. {T; F}

2. Food safety authorities in each country believe that food safety problems should be solved within their country. {T; F}

3. The major duty of the INFOSAN Emergency Contact Point in each FAO member state is to manage communication between national food safety authorities. {T; F}

4. Public health organizations can get findings of investigations and strategies for food safety improvement from INFOSAN. {T; F}

5. INFOSAN monitors possible international events concerning food safety independently. {T; F}

A、Manage Safety Decides Safety

B、Manage Safety Doesn't Stop

C、Material Safety Designated Sheet

D、Material Safety Data Sheet

A．Their business hours are limited.

B．Their safety measures are inadequate.

C．Their banking procedures are complicated.

D．They don't have enough service windows.

A.will not jam on the mooring line

B.is stronger

C.is easier to use when under heavy tension

D.is safer to use when under heavy tension