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1. Directions: Complete the sentences with appropriate relative adverbs or "prep. + which /whom".
(1) There are occasions animals might detect earthquakes before they occur.
(2) The various means plants resist insect attacks are to be classified and discussed.
(3) The chimpanzees have been getting sick because of people's diseases since people entered the forests they live.
(4) Some people think that the main reason animals are kept in zoos is to protect some endangered and valuable species.
【考点】
关系副词引导定语从句的用法; “介词关系代词（which/whom)”引导定语从句的用法;
【答案】

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选词填空（多句） 普通
课时演练
换一批
1. Directions: Listen to the following longer conversation and choose the best answer to each question. The conversation will be read twice, but the questions will be spoken only once.
(1) A. Some animals can't survive in the zoo. B. Animals in the zoo can't enjoy freedom. C. Animals can live a longer life in the wild. D. Some zoos don't take good care of animals.
(2) A. Positive. B. Negative. C. Neutral. D. Unclear.
(3) A. It is terrible to see animals in cages. B. It's stressful to see wild animals in person. C. It brings us closer to the natural world. D. It's more educational than watching TV.
(4) A. Animals have suffered too much. B. People have developed new techniques. C. More people regard it as morally wrong. D. The results of experiments may be unreliable.
听力题 容易
2. Directions: Read the passage and complete it by using the sentences in the box below. Each sentence can only be used once. Note that there are two more sentences than you need.

A. Sales like this caused a big increase in the breeding of these dogs as many would-be breeders hoped to make money quickly.

B. Buying into the popular trend led to severe consequences for the Tibetan Mastiff. C. One breed in particular had gained huge popularity in past years, which led to the tragic circumstances the breed currently faces.

D. Unfortunately, the Tibetan mastiff, once a highly desirable accessory for rich Chinese people to show off their fortunes, had lost its charm.

E. This breed saw a big increase in popularity several years ago and had become a status symbol for the wealthy in China.

F. The world's most expensive dogs are now being treated well in the dog houses.

The End of the Tibetan Mastiff Craze The Tibetan Mastiff, also known as the lion dog, is an ancient dog breed originating from Central Asia. This is a massive dog weighing in around 65 to 80 kilograms, with a luxuriously long coat that contributes to its lion-like appearance.

In 2011, an 11-month-old Tibetan Mastiff named Big Splash made headlines for fetching an incredible 10 million yuan when it was sold. At the peak of the market, a pure-blood mastiff could be sold for an average of 30, 000 to 50, 000 yuan, with some famous breeds selling for more than 200, 000 yuan.

The bubble had burst and the once hot market had turned ice cold. Some breeders have had to get rid of their dogs by selling them to killing houses to be made into leather. The breed that had once sold for millions was now only selling for about 1, 000 yuan. Many breeders got stuck with unwanted dogs and were struggling to make ends meet.

Anew CCTV program showed an example in a county in Qinghai province. The local government of Maozhuang Township and the local Surmang Temple each raised 200, 000 yuan to build a dog shelter in 2015, which received about 1, 200 stray dogs within only two weeks.

Hopefully someday, this breed will be able to regain some of its past glory and be seen only as a pet to be cared for.
任务型阅读 普通
3. Listen to the conversation and choose the best answer（   ）
A. The woman's pet is cute enough. B. He would like to keep a pet pig as well. C. The woman's second apartment is big. D. The woman should reconsider her plan.
听力题 容易