题目内容：
请在第__(59)__处填上正确答案。
A．valuable B．worthless
C．worthwhile
D．satisfactory
参考答案：
答案解析：
单选题：请在第__(59)__处填上正确答案。
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B．worthless
C．worthwhile
D．satisfactory
B．worthless
C．worthwhile
D．satisfactory
请在第__(58)__处填上正确答案。
请在第__(58)__处填上正确答案。 A．how B．if C．which D．since
Paragraph②______
Paragraph②______A．Main Results of Recent Researches B．Difference between Genetic
There were eighteen people on board the Matthew during its v
There were eighteen people on board the Matthew during its voyage to North Ameri
请在第__49__处填上正确答案。
请在第__49__处填上正确答案。
Countries that ratify the FCTC will have to, among other thi
Countries that ratify the FCTC will have to, among other things, __________A．hav