[单项选择]Researchers say a small pond of algae could produce enough hydrogen gas to meet the______ fuel needs for a dozen or so cars.


A. weekly
B. monthly
C. yearly
D. daily

[单项选择]Researchers say a small pond of algae could produce enough hydrogen gas to meet the______ fuel needs for a dozen or so cars.


A. weekly
B. monthly
C. yearly
D. daily

[单项选择]I ______ your last point-- could you say it again

[单项选择]According to ______, we could only say "The boy kicked the ball" instead of "Boy the ball kicked the".
A. syntagmatic relation
B. paradigmatic relation
C. endocentric construction
D. exocentric construction

[单项选择]What could Mary's cat say She could say ______.

[单项选择]Tom, ______ he had done, could at first say nothing.
A. horrified by that
B. horrifying by that
C. horrified by what
D. horrifying by what

[单项选择]How could Dennis distinguish between a small ball and a large ball from a distance of 3 feet The large ball would produce ______.


A. a sharper sound
B. a softer sound
C. a higher-pitched sound
D. a louder sound

[单项选择]Why did Ruth say that she could not dispute women's "Having" children


A. Only women can give birth to a baby.
B. Having children is a task assigned by their husbands.
C. Women have to do it to support the families.
D. Women love children

[单项选择]Never say （） behind a person's back that you couldn't say to his face.


A. everything
B. something
C. nothing
D. anything

[单项选择]The photoperiodic response of algae actually depends on the duration of darkness, but not on the response of light.（）
A. is not on light
B. but is not on the light
C. and not on light
D. the light is not on

[单项选择]

Say goodbye to the Mountain Gorilla. Say farewell to the Short Tailed Chinchilla.
That’s the conclusion of the United Nations Environment Program’s (UNEP) Third Global Environmental Outlook Report. The report was compiled (编写) for the UN from the work of 1 100 scientists. It predicts the state of the planet in the year 2032 based on the policies and practices of the last 30 years. If these continue, UNEP says, we’re going to be living on a very lonely planet. By 2032, one quarter of the world’s mammal species (哺乳动物种群) will disappear. They will be joined by 12% of the world’s bird species. And according to UNEP, 5 611 species of plants will also be wiped out-but since only 4% of the world’s plant species have been examined in detail, that figure will probably be much higher.
UNEP blames a variety of causes, from poverty and overpopulation to pollution, global warming and profit-driven economic and trade policies. But ther
A. the world would become much more developed
B. many animals and plants would soon disappear
C. we would use as many chemicals as possible
D. we would keep as many national parks as possible