[单项选择]______ does your mother go shopping

[单项选择]If the mother does not respond to her child's signals______.
A. the child will never be able to speak properly.
B. the child will stop giving out signals.
C. the child will invent a language of its own.
D. the child will make little effort to speak.

[单项选择]Mother does most of ______ at home.
A. clean
B. cleaning
C. to clean
D. the cleaning

[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.

[单项选择]Mother decided to go to the supermarket as soon as she ______.
A. finishes what she did
B. finished what she did
C. finished what she was doing
D. would finish what she was doing

[单项选择]Mother decided to go to the Supermarket as soon as she ______ .
A. finishes what she did
B. finished what she did
C. finished what she was doing
D. would finish what she was doing

[单项选择]—Tom, go and join your mother in cleaning the room. —Why ______ Jenny is sitting there doing nothing.
A. me
B. he
C. I
D. him

[单项选择]Your wish to go for a walk does not ______ your leaving the baby alone in the house.
A. rectify
B. notify
C. signify
D. justify

[单项选择]What does your brain do while you are sleeping
A. It improves problem-solving skills and creative thinking.
B. It helps you do your best in school.
C. It helps your brain sort out information from your day.
D. It has a good rest.

[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