It is important to make new laws and create international standards for these laws similar to _______ concerning international airspace.

A. what B. that C. those D. it

We are born to win! The _____ to success is in our genes, say scientists.

A. drive B. gravity C. request D. squeeze

Poetry written from the perspective of the urban youth tends to _______ their anxiety over a lack of sense of belonging.

A. rebel B. refresh

C. reveal D. resign

It happens that I am quite familiar with the professor _______ to give us a speech on environmental protection next Monday.

A. inviting B. to be invited

C. being invited D. having invited

Remember that ______ is better than cure, so brush your teeth at least twice a day and visit your dentist for regular check-ups.

A. priority B. privilege

C. principle D. prevention

Before we go any ______, it’s important to make sure you understand what an interview is and why it’s arranged.

A. far B. farther

C. further D. furthering

Don’t worry. They ______ to consider your advice. Let me remind them of it now.

A. could forget B. could have forgotten

C. should have forgotten D. should forget

This ______ of culture between Europeans and the Romany led to many nations taking action against them, even banning Romany groups from entering.

A. collision B. switch

C. surplus D. dimension

—The dinner was very good. I am so full.

—That’s too bad. But some dessert ________.

A. has been ordered B. will be ordered

C. was going to order D. has ordered

阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

Number sense is not the ability to count. It is the ability to recognize a in number. Human beings are born with this ability. , experiments show that many animals are, too. For example, many birds have good number sense. If a nest has four eggs and you remove one, the bird will not . However, if you remove two, the bird leaves. This means that the bird knows the between two and three.

Another interesting experiment showed a bird's number sense. A man was trying to take a photo of a crow(乌鸦)that had a nest in a tower, but the crow always left when she saw him coming. The bird did not until the man left the tower. The man had an .He took another man with him to the tower. One man left and the other stayed, but they did not the bird. The crow stayed away until the second man left, too. The experiment was with three men and then with four men. But the crow did not return to the nest until all the men were .It was not until five men went into the tower and only four left that they were able to fool the crow.

How good is a human's number sense? It's not very good. For example, babies about fourteen months old almost always notice if something is taken away from a group. But when the number goes beyond three or four, the children are fooled.

It seems that number sense is something we have in common with many animals in this world, and that our human is not much better than a crow's.

1.A. rise B. pattern C. change D. trend

2.A. Importantly B. Surprisingly C. Disappointedly D. Fortunately

3.A. survive B. care C. hatch D. notice

4.A. generally B. sincerely C. casually D. deliberately

5.A. distance B. range C. difference D. interval

6.A. amazing B. annoying C. satisfying D. disturbing

7.A. relax B. recover C. react D. return

8.A. appointment B. excuse C. idea D. explanation

9.A. fool B. hurt C. catch D. kill

10.A. reported B. repeated C. designed D. approved

11.A. confused B. gone C. tired D. drunk

12.A. gradually B. luckily C. strangely D. finally

13.A. single B. small C. local D. new

14.A. seldom B. temporarily C. merely D. often

15.A. sight B. nature C. ability D. belief