[单项选择]Does the earth go ______ the sun

[单项选择]

Why does cream go bad faster than butter Some researchers think they have the answer, and it comes down to the structure of the food, not its chemical composition — a finding that could help rid some processed foods of chemical preservatives.
Cream and butter contain pretty much the same substances, so why cream should sour much faster has been a mystery. Both are emulsions — tiny globules (小球) of one liquid evenly distributed throughout another. The difference lies in what’s in the globules and what’s in the surrounding liquid, says Brocklehurst, who led the investigation.
In cream, fatty globules drift about in a sea of water. In butter, globules of a watery solution are locked away in a sea of fat. The bacteria which make the food go bad prefer to live in the watery regions of the mixture. "This means that in cream, the bacteria are free to grow throughout the mixture," he says.
When the situation is reversed, the bact
A. it suggested a way to keep some foods fresh without preservatives
B. it discovered tiny globules in both cream and butter
C. it revealed the secret of how bacteria multiply in cream and butter
D. it found that cream and butter share the same chemical composition

[单项选择]The distance between the earth and the sun may be said to be ______.
A. enormous
B. huge
C. vast
D. immense

[单项选择]What does "go home" at the end of the second paragraph mean
A. Be taken indiscriminately
B. Be gone unnoticed
C. Be taken for granted
D. Be perceived

[单项选择]The new regulation does not go into ______ until the first of July.
A. effort
B. effect
C. affect
D. influence

[单项选择]How does everything living on earth live
A. Each plant can live alone.
B. Each animal can live alone.
C. Everything living on earth cannot live without needing other living things.
D. If living things want to live they must kill each other.

[单项选择]In relation to the earth, the sun will move _____________.

[单项选择]What percentage of the total earth's water does underground water make up
A. 0.05%.
B. 0.5%.
C. 4.5%.
D. 5%.

[单项选择]Why does Denny have to go unarmed
A. He cannot tell an enemy from a friend.
B. The price would be very high if it were armed.
C. He does not know how to use a weapon.
D. It is unlikely that he will be attacked by a human enemy.

[单项选择]Mercury orbits the Sun in 88 Earth days at an average speed of 48 kilometres per second, allowing it to overtake Earth every 116 Earth days.
A. precipitate
B. stimulate
C. overhaul
D. rotate

[单项选择]______ does your mother go shopping

[单项选择]Hardly does a week go by without news reports of some new records.
A. 几乎没有一个星期没有新的记录报道。
B. 几乎一个星期还没有过去就没有了新的记录。
C. 几乎每个星期都有一些新的记录的报道。
D. 没有新的记录的报道，一个星期就过去了。

[单项选择]The sun warms the earth,（）makes it possible for plahts to grow.
A. this
B. that
C. which
D. what

[单项选择]The sun heats the earth, （） is very important to the living things.
A. which
B. that
C. as
D. what

[单项选择]How does a man go shopping when he wants to buy something
A. He will often ask help from the shop assistant.
B. He will look at it carefully and wait for a while.
C. He has made a plan before he wants to buy it.
D. He will discuss it with his wife and then buy it.