3.B　细节理解题。根据JML写的信中的第一段可知他主要抱怨的是自行车骑车者在人行道上车速太快,故选B项。

　　4.D　代词指代题。根据JML信中的内容可知他主要抱怨的是自行车骑车者,故此处的they就是指“骑车者”。故选D项。

　　5.A　推理判断题。通读三封书信可知,三个读者讨论的都是影响道路的危险因素,故选A项。

　　B

　　An ambitious project to establish a human colony on Mars has attracted applications from tens of thousands of would-be astronauts,just two weeks after applications opened.

　　The mission,a private venture by the Dutch non-profit organization,Mars One,aims to send a crew to the Red Planet in 2022—and,due to the physiological change in the human body after a stay on Mars,there’d be no coming back.That hasn’t deterred people,though,so far,over 200,000 people have applied to become one of Mars’ first immigrants.“This is turning out to be the most desired job in history,” says Bas Lansdorp,co-founder of Mars One.

　　Day-to-day life on Mars will be no picnic.The organization says that the daily routine on the planet would involve construction work on the colony (installing greenhouses,for example),maintenance of the settlement’s systems and research into Mars’ climate and geological history—all in an inhospitable environment with unbreathable air and an average temperature in the planet’s mid-latitudes of around -58 ℉.

【2017届《名师A计划》高考英语新人教版一轮复习配套练习：必修3 Unit 4《Astronomy：the science of the stars》（含解析）】相关文章：

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