单选题：The author’s primary purpose in writing this passage is to__

题目内容：
The author’s primary purpose in writing this passage is to______. A．improve the teaching of mathematics
B．tell parents to pay more attention to the guidance of teachers in the matter
C．help ensure that every child’s capacities are fully developed when leaving school
D．urge the use of a much underused resource-the parent

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某客户开仓卖出大豆期货合约20手，成交价格为2 020元/吨，当天平仓5手合约，成交 价格为2 030元，当日结算价格为

某客户开仓卖出大豆期货合约20手，成交价格为2 020元/吨，当天平仓5手合约，成交 价格为2 030元，当日结算价格为2 040元/吨，则其当天平仓盈亏为__

分类：公共英语四级  题型：单选题
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Many Americans like basketball better than football because

Many Americans like basketball better than football because the latter is so ha

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They strolled around the lake for an hour or so．

They strolled around the lake for an hour or so． A．ran B．rolled C．walked D．raced

分类：公共英语四级  题型：单选题
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Questions 14-16 are based on the following monologue about

Questions 14-16 are based on the following monologue about Marco Polo’s life as

分类：公共英语四级  题型：单选题
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