Unit 13 We're trying to save the earth!综合练习 2023-2024学年人教版九年级英语全册

Unit 13 We're trying to save the earth! 综合练习 一、单项选择 1．—What do you want to tell us about the attacker, Mr. Smith? —From his appearance, I’m sure that he ________ be young. He should be in his fifties. A．mustn’t B．can’t C．shouldn’t D．may not 2．To save energy, I always ________ lights when I leave the room. A．turn on B．try out C．turn off D．pay for 3．It is reported that the food that Chinese people ________every year is enough to feed 200 million people for a year. A．eat B．have C．make D．waste 4．—What do you think of the food in the form of pills? —I thought it would be tasty, but it ________ to be tasteless! A．turned into B．turned out C．turned away D．turned off 5．—Our computer is working again! —Yes. Our IT teacher ________ it. It took him about two hours. A．has fixed B．will fix C．is fixing D．was fixing 6．Mary’s brother _________ the navy in 2019 and _________ the navy since then. A．joined; has been in B．joined in; has joined in C．joined in; has been in D．joined; has joined 7．Those hills are so small that they ________ be shown in maps. A．shouldn’t B．mustn’t C．couldn’t D．can’t 8．—My keys ________ at home. Oh, where are they? —Don’t worry. Please look for them carefully in your bag. A．left B．didn’t leave C．were left D．weren’t left 9．—Is there anything new in today’s newspaper? —Yes. A library with five thousand books ________ to Hope School as a gift yesterday. A．is offered B．were offered C．was offered D．offered 10．Don’t disturb Sun Yang now. He ________ for the swimming competition. A．prepares B．prepared C．is preparing D．will prepare 二、完形填空 Natural resources are things that we use that come from Earth. 11 natural resources are limited(有限的). This means that they will not 12 forever. Some are renewable, like when you plant a new tree when you 13 one down. Others are not renewable, like when you dig coal(煤) out of the 14 . Once it is used, it is gone. People realize the 15 that Earth’s natural resources are limited, and can do things to hel