题目内容

【题目】_______the days ______ I spent with Jane on the farm, I still can't figure out what went wrong.
A.Looking forward to; when
B.Looking back on; that
C.Looking into; which
D.Looking back on; when

【答案】B
【解析】句意:回想我和Jane在农场度过的那段时间,我仍然搞不明白哪里出问题了。look forward to期待;look back on回顾,回想;look into调查。根据句意可知第一空用look back on的现在分词的结构做状语;第二空构造了定语从句,先行词the days,定语从句要用关系代词that或者which在定语从句中作宾语;故选B。

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【题目】Life is full of funny moments, and not just for humans.

Over the years, studies by various groups have suggested that monkeys, dogs and even rats love a good laugh. People, meanwhile, have been laughing since before they could talk.

Jaak Panksepp, a professor at Bowling Green State University, US, said he would not be surprised if positive feelings could be produced in some animals. Dolphins, for example, have long attracted animal researchers because of the complex (复杂的) ways in which they communicate: a rich variety of sounds of different rhythms. A decade ago, researchers studying dolphins at the Kolmarden Wildlife Park in Sweden noticed a set of sounds the dolphins made during play-fighting. They concluded that the purpose of the sound was to suggest that the situation was pleasant and to prevent it from a real fight.

Panksepp has even seen evidence of joy in crayfish (小龙虾). When given small amounts of drugs such as cocaine (可卡因) in a certain place, they appear to connect that location with pleasure. “Given the chance, they will always return to that place, perhaps in the hope of getting more,” he says. Panksepp wasn’t sure it equals the same happiness that humans get from cocaine, but said it “could be in the same evolutionary category”.

More studies are needed to really understand animals’ laughter. Strangely enough, the answers may help with our own desires for cures for mental illnesses. Panksepp’s experiments may soon lead to a new antidepressant (抗抑郁) drug that works by using the pathways in the brain behind positive feelings and joy. Perhaps pleasure and laughter in the animal world will help solve the depression in our own species one day.

1Scientists are always interested in doing research on dolphins because dolphins ________.

A. understand humans’ sounds

B. show positive feeling while playing

C. make different sounds when they communicate

D. make a set of sounds during play-fighting games

2What do the underlined words “our own species” in the last paragraph refer to?

A. Animals.

B. Humans.

C. Sounds.

D. Pleasure.

3From the passage we can learn that ________.

A. people learn to talk before they can laugh.

B. animals have a very good sense of location.

C. humans have known the animals’ happiness well.

D. there is still much left to learn about animals’ laughter.

4Which of the following can be the best title for this passage?

A. Animals Feeling Joy.

B. Man and Nature.

C. Sounds Made by Animals.

D. A Long Way to Go.

【题目】Of all nature's disasters, forest fires are often considered the most frightening. Moving at lightning speed, huge walls of flames can burn acres of land in just a few minutes. And although technology, including the use of fire-retardant chemicals, has greatly helped the fight against forest fires, they still do great damage.

According to the National Interagency Fire Center, the fire season last year was the worst on record in terms of the number of fires and acres burned. There were 96. 385 fires and 9.873429 acres affected by fire in a year that was 125% more destructive(毁灭性的) than the10-year average. These fires cost the federal government $1.5 billion to fight, and this figure does not include the money spent by local and state governments as part of the effort.

Fires in the southern states represented half of the national total last year with Texas, Oklahoma and Arkansas being home to a usually high amount of activity. Wildfire has also taken place in Western states such as California, Colorado and Alaska throughout the past 10 years.

It is said that two-thirds of forest fires are started accidentally by people. Almost one quarter are purposely set, while lighting causes 10%.

Forest fires can have advantageous effects. Charcoal(木炭) enriches soil and some plant species(种类) grow well after fire. The cones of the jack pine tree, for example, will not spread their seeds unless there is heat. Douglas fir trees grow best in open sunlight areas after fire.

1Forest fires are considered to be the most frightening because____.

A. fire-retardant chemicals can't be made use of

B. huge walls of flames can burn acres of land

C. they make the greatest loss of all disasters

D. they spread too fast and do great damage

2Almost 25% forest fires are set_____.

A. unexpectedly B. by lighting C. on purpose D. naturally

3What does the last paragraph mainly talk about?

A. The advantages of forest fires. B. The usage of charcoals.

C. Pine trees need fires. D. Fires destroy all plants but two.

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