A、 make
B、 do
C、 learn
D、 review
答案:B
A、 make
B、 do
C、 learn
D、 review
答案:B
A. will be built
B. will build
C. was built
D. built
A. pushed
B. followed
C. led
D. separated
A. finish
B. forgive
C. experience
D. consider
A. 地球自转轴在外部空间上的变化,如“岁差”和“张德勒颤动”。
B. 地球自转轴在外部空间上的变化,如“岁差”和“章动”。
C. 地球自转轴在地球内部空间上的变化,如“岁差”和“章动”。
D. 地球自转轴在地球内部空间上的变化,如“章动”和“第四种颤动”。
A. to have looked
B. looked
C. looking
D. to look
A. in
B. on
C. by
D. at
A. ridden
B. flew
C. been
D. gone
A. give up
B. giving up
C. to give up
D. having given up