《担保法》规定：接受定金的不履行合同的，应当（）返还定金。
A.如数
B.双倍
C.三倍
D.四倍
参考答案：B
根据图示补全短文。
Sam is a good 1_____ He likes sports and likes 2_____ healthy food. He likes
3_____ and 4_____ He thinks they are very fun. 5_____ is in the school
sports club. Sam can 6_____ very fast. He wants to be a running star. For breakfast he likes
7_____ and 8_____ He has 9_____ and 10_____ for lunch.
For dinner he likes 11_____ and 12_____ After dinner, he eats some fruit. He
13_____ 14_____ and 15_____ He 16_____ 17_____
He has a small 18_____ collection. He has five 19_____ and ten 20_____
用轻质细线把两个质量未知的小球悬挂起来，如图所示。今对小球a持续施加一个水平向左的恒力，并对小球b持续施加一个水平向右的同样大小的恒力，最后达到平衡。表示平衡状态的图可能是
A．
B．
C．
D．
He likes sports and likes 2_____
healthy food. He likes 
and 4_____ 
He thinks they are very fun. 5_____ 
is in the school 
very fast. He wants to be a running star. For breakfast he likes 
and 8_____
He has 9_____
and 10_____
for lunch. 
and 12_____ 
After dinner, he eats some fruit. He 
14_____
and 15_____
He 16_____
17_____ 
and ten 20_____ 
