The earthquake happened in south Xinjiang on Feb. This ______ killed 266 people.
A. casualty
B. collapse
C. calamity
D. crater
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Lyderic Bocquet drilled lots of small pits in the stone in order to ______.
A. make it look smarter
B. reduce the water drag
C. increase the revolution of the stone
D. make the game more like golf
A highly controversial explanation proposed by string theorists is that ______.
A. magnetic fields affect gravity subtly
B. G is larger near the Earth's poles
C. G has a number of hidden dimensions
D. discrepancies emerge between measures of G
How many months old does child play with sounds not only for enjoyment？
A. three months
B. two months
C. five months
D. six months
From the passage we can learn that ______.
A. the teenage brain is a kind of work in progress
B. the new brain scans support the conventional thought
C. the brain's frontal cortex becomes bigger during the teenager years
D. at the age of 11 or 12 teenagers are unable to find out people's true feelings
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