1 There are a limited number of books on this subject in the library.
A large
B total
C small
D similar
2 Don’t hesitate to let me know if there is anything I can do for you.
A pause
B refuse
C reject
D wait
3 Merge the following two short sentences into one new sentence.
A Split
B Combine
C Break
D Divide
4 Color changes in chameleons seem to be caused by environmental temperature as well as by other external stimulus.
A have
B appear
C ought
D used
5 Their sole fault was a failure to recognize all the factors involved.
A initial
B maximum
C usual
D only
参考答案 CABBD