1 . 选择并使用所给单词或短语的正确形式完成句子，有两个词为多余。

automatic   participate   keep sth. in perspective   prohibit   contract   boost mount up   boil down to   throw in the towel   delicacy   beat down   greed

1. Any student _________ in this activity will be given a prize.
2. People should _________ from using plastic bags to reduce white pollution.
3. Now it _________ a question of how we can get there: by plane or by train?
4. We should attach importance to our personal hygiene, otherwise it would increase the chances of _________ certain diseases.
5. He stared at the diamonds with _________ eyes.
6. Nowadays, many youngsters fly to Changsha just to visit local restaurants and taste local _________.
7. The money he put aside every month soon _________ to quite a considerable amount.
8. You need to _________ everything _________ to draw a logical conclusion.
9. After the user fills in the application form, the data will be updated _________.
10. The rain _________ continuously, it was completely dark outside, and the road was deserted except for him and his car.

2 . 用方框中所给单词或词组的适当形式完成句子

partner; geometry; automatic; work out; reflect on; brush up; be based on; end up; in short; at the heart of

1. I feel that ________is a difficult subject.
2. Breathing is an ________function of the body.
3. I’ve ________your share of the expense at $10.
4. Our customers are ________everything we do.
5. As people get older, they will ________the past.
6. Spain has been one of Cuba’s major trading ________.
7. He ________on some language points before the exam.
8. Science fiction is a type of writing that ________fantasy.
9. At first he refused to admit his fault but ________apologising.
10. He hoped for greater trust between the two nations, more trade, more cultural exchanges—________, a lasting peace.

3 . Complete the sentences with the adjectives in the box.

abnormal             automatic             available             constant             critical efficient             distant             instant             relevant             secure

1. Big data will become much more____________ in solving crimes in the future.
2. Many smart watches can provide____________ fitness data.
3. It is possible that this technological fantasy will come true in the____________ future.
4. After the accident, both drivers are in ____________condition.
5. The fridge keeps food at a____________ low temperature.
6. The air condlitioner works in ____________mode.
7. It is important to make food and water____________ to the survivors.
8. Houses with advanced appliances will keep us ____________and healthy.
9. We find the German transport system to be one of the most____________ in Europe.
10. The sensors can detect anything____________ and automatically call someone to come and fix it.

4 . Directions: Fill in each blank with a proper word chosen from the box. Each word can only be used once. Note that there is one word more than you need.

A. smarts   B. strategies   C. signal     D. guideline     E. normal       F. automatic G. challenged   H. deceives     I. target     J. suspended       K. disturbance

Spiders are Smarter than We Think

People tend to associate intelligence with brain size. As a general     1    , this makes sense: the more brain cells, the more mental capabilities. Humans, and many of the other animals we have come to think of as intelligent, such as chimpanzees and dolphins, all have large brains. And it’s long been assumed that the smallest brains simply don’t have the capacity to support complex mental processes. But what if we are wrong and they actually do?

“Spiders are one case where this general idea is     2    ”, said Dimitar Dimitrove of the University Museum of Bergen in Norway, “Behaviors that can be described as ‘cognitive’, as opposed to     3     responses, are fairly common among spiders.” Jumping spiders are the undisputed champions of cognition among spiders. The jumping spiders shown to have the most impressive     4     belong to the genus(属)Portia, found in Africa, Asia and Australia. These spiders prefer to hunt other spiders and have     5     tailored to each species they prey on.

When hunting another group of jumping spiders called Euryattus, Portia employs a clever trick. Euryattus females build nests in curled-up dead leaves     6     in air by silk attached to rocks or vegetation. Courting males crawl down the silk ropes, stand on top of the nest, and shake it in a specific way. The     7     draws the female out of the nest.

To pursue a spider that also eats Jumping spiders, Portia     8     it into moving closer by plucking（拔）some of the silk strands of its web. If the     9     spider is relatively small, Portia plucks the web to imitate a trapped insect, prompting the spider to rush over, thinking it is about to have a meal—only to become one itself. But if the spider is bigger and potentially more dangerous, Portia may copy a gentle     10     similar to a fruit fly contacting a single strand at the edge of the web that the spider will slowly wander over to inspect. As soon as the target is close enough, Portia pounces and strikes with its poisonous long sharp teeth.