单项选择题
How to evaluate the performance of students is still a problem that troubles many professors（）
A. examine and judge B. assist in C. enhance D. account for
The manufacturer was forced to return the money to the ...
单项选择题The manufacturer was forced to return the money to the consumers under（）of law.
A. guideline B. definition C. constraint D. idetity
They have （）the price of the coat from $ 50 to $ 25.A. ...
单项选择题They have （）the price of the coat from $ 50 to $ 25.
A. decreased B. lessened C. reduced D. diminished
No one would have time to read or listen to an account ...
单项选择题No one would have time to read or listen to an account of everything（）going on in the world.
A. it is B. there is C. as is D. what is
