According to the passage, third-hand smoke refers to_____.
A. the damage to the third person's health caused by smoking
B. the parts of cigarette that are thrown away by the smokers
C. the unseen poisonous stuff left over indoor by smoking
D. poisonous materials that can be seen and found on the carpeting
查看答案
A．More critical.B．More talkative.C．Gentle and friendly.D．Strict and hard-working.
A. More critical.
B. More talkative.
C. Gentle and friendly.
D. Strict and hard-working.
听力原文：W: I'm tired of driving all the way to work and back every day. If only cars could drive themselves!
M: Well, some car manufactures are working on them. I guess you'll soon buy one if you can afford it.
Q: What does the man imply？
(15)
A. Driving to work is really a headache.
B. The woman will be able to buy an intelligent car.
Cars that drive themselves may be very expensive.
D. He is working with a car producer on intelligent cars.
Neurogenesis occurs______.
A. in our whole life
B. when excess connections are pruned
C. in three short periods
D. when the brain is exercised
A．People with such skills save them time and money.B．People with such skills are more
A. People with such skills save them time and money.
B. People with such skills are more experienced.
C. People with such skills are usually better educated.
D. People with such skills are more efficient at work.
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