When he was sixteen, Hitchcock found his talent forA．film-making.B．writing.C．action.D．draw

Which of the following details about Hitchcock is INCORRECT?

A．He is good-looking.

B．He is a moviemaker.

C．He is from England.

D．He looks very gentle.

What happens to a female elephant when it dies?

A．The others take a little of its corpse away.

B．The others eat its dead body.

C．The others bury it near their home.

D．The others leave its dead body there.

Why are the male elephants sent away?

A．Because they are too naughty.

B．Because they are too bully.

C．Because females elephants don"t like them.

D．Because elephants live in families of females.

What is the one reason astronomers make long time exposures?

A．To spend less time at their telescopes.

B．To overcome the problem of weak light.

C．To take more photographs.

D．To photograph astronomical objects without using a telescope.

What do astronomers use photographic plate for?

A．Decreasing the time it takes to photograph objects.

B．Avoiding using a telescope.

C．Sharpening the color of what they observe.

D．Obtaining images of distant objects.

What is the advantage of photographing the skies?

A．The cost of equipment needed is reduced.

B．Fewer data need to be analyzed.

C．The images can be studied by different astronomers.

D．The natural colors of astronomical objects can be captured.

The government of the developed countries may prefer

A．a stable population.

B．a slowly-increasing population.

C．a fast-increasing population.

D．a declining population.

According to the passage, a large population can produce a chance for the development of

A．agriculture.

B．transport system.

C．industry.

D．national economy.