2019年mpacc考试英语真题——形容词1630

{01}Please keep ______; I’m taking a photo of you all. Say “Cheese”.

A.calm

B.still

C.quiet

D.silent

解析：词义辨析题。    A. calm 冷静    B. still  静止不动  C. quiet 安静D. silent 沉默不语 句意：站着别动，我在给你们拍照说“茄子”。根据语境选B
本题选B。

{02}. Many people think that it is ____________making such an experiment.

A.worthwhile

B.worth

C.worthy

D.valuable

解析：词义辨析。Worthwhile (adj) 值得的worthwhile 用于下列句型It is worthwhile doing sth./ to do sth.  干某事是值得的worth  用于下列句型：sth. is worth sth/ doing此句型中只能用doing， 不能使用被动。 worthy 用于下列句型：sth. be worthy of sth/ being done     sth. be worthy to be done。故选A。
本题选A。