1.A phone installed on the plane is paid by the customer. So the airplane company need not to get rid of it. Evaluate: Whether the install of phone will consume more energy.

2.The nurse to patient is 1:6, but the government want to change to 1:5. So clearly the hospital will hire more nurse from other province. Strenghten: Some nurse feel there are too many patient and leave the job.
(I believe this answer is correct because it means the nurse has already work to their full load so the hospital need to hire new one.)

3. A bold face one. 题干非常长 说经理们近来大量购入股票，一般经理们都会在股票大跌至前抛掉股票..... 但经理们为什么会买入呢？一般认为他们在迷惑大众。上述的那些经理的行为应该符合这种解释. 第一句和最后一句划线。第一句描述了一个事实，后一句是作者的main conclusion.

4. Environmentalist: when emitted into atmosphere , both methane¹ and carbon dioxide absorb heat reflected from the ground . As municipal solid waste decomposes² inside a landfill, methane is produced. To mitigate³ the impact fof the 'green house' effect, we should burn methane emitted from landfills and convert the energy generated during the burning process into electricity .
Objection: the burning process will produce as much carbon dioxide . As a result , the amount of green house gases remains⁴ unchanged . which one of the following adequately counters the above objection ?

5. the clearing of rain forest has caused the loss of habitats of certain frogs which lay eggs in forest pools. However , pasture pools are more permanent and serve as a good alternative to forest pools . but the eggs laid in pasture pools do not do as well as those laid in forest pools because ______
A when the drought comes , few of the forest pools remain unaffected, and many of the pasture pools dry up.
E the longer the pools last , the more likely that they would attract predators⁵ , which feed on the eggs of the frogs. (my choice)

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