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According to the report, as many as 22 rare__________ may be at risk.

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Communications technology has_______ to be a growth area.

Fill in each blank with one of the following verbs that fits in the proper form.sell/ dry/ put/ give/ die/ cry/ pump/come/lookThe storm ____(1)___ out.“____(2)____ out” she ____(3)____ out to warm us.He ___(4)___ the fire out before going out.___(5)____ the clothes _______ out.She___(6)___ the sweets out among the children.The well is filthy. ___(7)____ it out.The new monthly magazine__(8)___ out.Sorry, silk scarves_____(9)___ out.

Fill in each blank with one phrase in its proper form.turn down/ turn in/ turn into/turn out/ turn up-No wonder she oversleeps every day.5.He did not ______ for the meeting because his mother is seriously ill.6. _______ your paper before you leave.7.He _______ the collar of his overcoat and went out.8. ________ the lights before you leave.

地膜覆盖的主要作用有

A. 提高地温
B. 保墒与提墒
C. 减少雨滴打击,减少土壤板结
D. 提高光合作用
E. 减少耕层土壤盐分,防止土壤盐碱化

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