Unit 4 Wildlife Protection grammar课时作业

[语言知识练习固基础]

　　单句语法填空

　　1．He couldn't make himself heard (hear)above the noise of the traffic.

　　2．This street is four times the length (long)of that one.

　　3．If so，your points of view are bound to conflict with his.

　　4．He assisted in designing (design)the new bridge.

　　5．This kind of new woollen sweater wears (wear)well.

　　6．I do not use the computer for student assessment (assess)．

　　7．It is evident that he is not equal to the job.

　　8．He was among the few who managed to live through the enemy prison camp.

　　9．He was found out before he could carry out his plan.

　　10．Besides for fun，hiking is a good way to exercise.

[高考题型练习提能力]

　　Ⅰ.阅读理解

　　Amazon，the world's largest online retailer (零售商)，is testing unmanned drones (无人机) to deliver goods to customers，according to Chief Executive Jeff Bezos.

　　The drones，called Octocopters, could deliver packages weighing up to 2.3 kg to customers within 30 minutes after they placed the order, he said.

　　However，he added that it could take up to five years for the service to start.

　　The US Federal Aviation Administration (FAA) is yet to approve the use of unmanned drones for civilian purposes (民用)．

　　"I know this looks like science fiction, but it's not，"Mr Bezos told CBS television's 60 Minutes programme.

　　"We can do half hour delivery...and we can carry objects，we think，up to five pounds (2.3 kg)，which covers 86% of the items that we deliver."

　　Ready to enter

The service will be called Prime Air and comes as Amazon is looking to improve