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题目内容
（西安石油大学大学英语I（下））
What is predicted about solar energy in Cycle 25?(本题2.5分)
A、 Cycle 25 may be stronger than Cycle 24.
B、 Cycle 25 may be weaker than the following decades.
C、 Cycle 25 may be as weak as the period of 1645 to 1715. √
D、 Cycle 25 may be stronger than the period of 1790 to 1830.
A、 Cycle 25 may be stronger than Cycle 24.
B、 Cycle 25 may be weaker than the following decades.
C、 Cycle 25 may be as weak as the period of 1645 to 1715. √
D、 Cycle 25 may be stronger than the period of 1790 to 1830.
参考答案