Distinct lines l and m intersect, forming 4 pairs of adjacent angles. Which of the followi

A．networts

B．switching elements

C．computers

D．data terminal equipment

A．networts

B．switching elements

C．computers

D．data terminal equipment

SECTION 3

Directions: Each passage in this group is followed by questions based on its content. After reading a passage, choose the best answer to each question. Answer all questions following a passage on the basis of what is stated or implied in the passage.

Periodic realignment of the Earth's magnetic field occurs two ways: the

first, "field regeneration", or the creation of new magnetic fields from the

ambient geomagnetic field, takes place because magnetic field lines are trapped

Line in effective electrical conductors. The field is trapped in molten iron which

(5) moves in response to the forces imposed upon it and as the core moves, the field

lines are stretched and twisted, creating a new magnetic field. The second

process is the diffusion of the magnetic fields: in the same way that a drop of

dye will soon diffuse throughout a swimming pool, a concentration of magnetic

field lines diffuses throughout the planet's outer core. On the large scale of

(10) stars and planets, the field lines are caught up in the fluid motion and distorted,

generating a new magnetic field before diffusing away. This rarer type of field

reversal is likely caused by unexplained larger changes in the flow in the outer

core, though scientists have suggested such fluctuations may simply be extreme

examples of fluctuations in the dynamo processes-an El Nino in the weather of

(15) the outer core.

The passage is chiefly concerned with

A．offering an explanation of the process that causes a phenomenon, and a counter-explanation

B．demonstrating how two processes act in symbiotic coordination in causing a phenomenon

C．establishing how one process causes a phenomenon which is resisted by a second process

D．explaining two separate processes which cause a mostly identical phenomenon

E．outlining the essential differences between two distinct phenomenon that issue from a single cause

A.distinct

B.clear

C.complementary

D.similar

SECTION 3

Directions: Each passage in this group is followed by questions based on its content. After reading a passage, choose the best answer to each question. Answer all questions following a passage on the basis of what is stated or implied in the passage.

Periodic realignment of the Earth's magnetic field occurs two ways: the

first, "field regeneration", or the creation of new magnetic fields from the

ambient geomagnetic field, takes place because magnetic field lines are trapped

Line in effective electrical conductors. The field is trapped in molten iron which

(5) moves in response to the forces imposed upon it and as the core moves, the field

lines are stretched and twisted, creating a new magnetic field. The second

process is the diffusion of the magnetic fields: in the same way that a drop of

dye will soon diffuse throughout a swimming pool, a concentration of magnetic

field lines diffuses throughout the planet's outer core. On the large scale of

(10) stars and planets, the field lines are caught up in the fluid motion and distorted,

generating a new magnetic field before diffusing away. This rarer type of field

reversal is likely caused by unexplained larger changes in the flow in the outer

core, though scientists have suggested such fluctuations may simply be extreme

examples of fluctuations in the dynamo processes-an El Nino in the weather of

(15) the outer core.

The passage is chiefly concerned with

A．offering an explanation of the process that causes a phenomenon, and a counter-explanation

B．demonstrating how two processes act in symbiotic coordination in causing a phenomenon

C．establishing how one process causes a phenomenon which is resisted by a second process

D．explaining two separate processes which cause a mostly identical phenomenon

E．outlining the essential differences between two distinct phenomenon that issue from a single cause

n=l × 193

Column A Column B

The number of distinct 10

positive factors of n

A．if the quantity in Column A is greater

B．if the quantity in Column B is greater

C．if the two quantity are equal

D．if the relationship cannot be determined from the information given

According to the author, the phrase "learning to use a computer"(Lines 3,4,Para.3) means learning_____.

A．a set of rules

B．the fundamentals of computer science

C．specific programs

D．general principles of programming

A.account –l

B.nl /etc/passwd | head

C.wc -users /etc/passwd

D.wc -lines /etc/passwd