11、The theory of continental drift can ______ the occurrence of earthquakes.（1分）
A、clear up B、make clear
C、make use of D、give an account for
12、In order to buy a house she had to obtain a ______ from the bank.（1分）
A、finance B、capital
C、loan D、debt
13、Tangyuan,______ rice balls, are a special treat during the Chinese Lantern Festival.（1分）
A、bitter B、sour
C、sticky D、spicy
14、It ______ us years to find out that Father loved us very much because he never expressed it.（1分）
A、spent B、experienced
C、took D、valued
15、Many colleagues came to help me; otherwise I ______ so much work in such a short time yesterday.（1分）
A、would not handle B、will not have handled
C、could not handle D、could not have handled