2. 外语
  3. Data from Voyager II have presented astronomers with a puzzle about why our outermost planet exists.

Data from Voyager II have presented astronomers with a puzzle about why our outermost planet exists.

admin2009-06-15  28
问题 Data from Voyager II have presented astronomers with a puzzle about why our outermost planet exists.
选项 A、problem
B、mystery
C、question
D、point
答案B
解析 puzzle：迷。mystery：迷。His death has remained a puzzle. 他怎么死的至今还是个迷。It was a mystery how the burglars got in. 盗贼怎么进来的是个迷。problem：问题。We have lots of problems to solve. 我们有许多问题要解决。question：问题。The clever student asked the teacher an extremely difficult question. 那个聪明的学生问了老师一个极其难的问题。point：论点。The point that I want to make here and now is that Ph. D. dissertations must be original. 此时此地我想要说的一点是博士论文必须是原创性的。
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