Bats are surprisingly long-lived creatures, some ______ a life span of around 20 years.

单项选择题What the correspondent sent us is an ______ news report. We can depend on it.

单项选择题People have always been（）about exactly how life on earth began.

A.curious
B.excited
C.anxious
D.careful

单项选择题This coastal area ______ a national wildlife reserve last year.

单项选择题The teacher spoke so fast that it was hard for the students to（）what he was saying.

A. take in
B. take off
C. take on
D. take after

单项选择题There were many talented actors out there just waiting（）

A. to discover
B. to be discovered
C. discovered
D. being discovered

单项选择题The settlement is home to nearly 1,000 people, many of（）left their village homes for a better life in the city.

A. whom
B. them
C. which
D. those

单项选择题苏霍姆林斯基的教育思想是( )。

单项选择题I'm tired out. I ______ all afternoon and I don't seem to have finished anything.

单项选择题I have to delay（）the letter.

A.to answer
B.answering
C.answer
D.answered

单项选择题No sooner had he finished his talk______he was surrounded by the workers.