问题
选择题
. Many people think that it is ____________making such an experiment.
A.worthwhile
B.worth
C.worthy
D.valuable
答案
答案:A
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。