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把下面新闻标题和对应类型进行连线

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新闻背景材料包括（）

A. 对比性材料
B. 说明性材料
C. 议论性材料
D. 注释性材料

根据实习4给定资料，分别计算小麦、玉米单作和间作套种的光能利用率Ep，并结合所学内容对结果进行比较分析。（1）小麦单作的光能利用率Ep1（2）玉米单作的光能利用率Ep2（3）小麦和玉米间作套种的光能利用率Ep3（4）结合所学内容对结果进行比较分析。

Takeoff is the phase of flight in which an aircraft goes through a___ from moving along the ground (taxiing) to flying in the air, usually starting on a runway.

A. transfer
B. transition
C. phase
D. status

Large transport category (airliner) aircraft may use a ___power for takeoff, where less than full power is applied in order to prolong engine life, reduce maintenance costs and reduce noise emissions.

A. reduced
B. full
C. increased
D. no