题目内容

【题目】太阳活动对地球产生的影响有

①产生极昼和极夜现象 ②干扰无线电波通讯 ③产生极光现象 ④中高纬地区一些乔木年轮的疏密变化呈现出约11年的周期

A. ①②③ B. ②③④ C. ①②④ D. ①③④

【答案】B

【解析】极昼极夜现象与太阳直射点的回归运动有关,与太阳活动无关,①错误;太阳活动爆发时产生的电磁波和高能带电粒子流,能够扰动电离层,干扰无线电短波通讯,②正确;太阳活动产生高能带电粒子流高速冲进两极地区的高空大气层时,会产生极光现象,③正确;太阳活动会对地球气候产生影响,太阳黑子活动周期往往与地球各地年降水量变化周期有相关性,因此会引起树木生长速度的变化,最终导致树木年轮的变化,④正确。故②③④正确,所以本题选择B选项。

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【题目】完形填空(共20小题;每小题1.5分,满分30分)

阅读下面的短文,从短文后各题所给的A、B、C和D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

Around 5:30 a.m. Todd Steinkamp left the hotel and drove to attend a funeral in Green Bay, Wisconsin. About half an hour into his journey, he noticed a small 1 coming from his front tire. By 7 a.m., he still had 70 miles 2 , but the noise was so loud that he knew he had no choice but to 3 .

Steinkamp figured there was little chance that anyone in Wild Rose, Wisconsin a 4 town with a population of 725 could help so early in the morning. 5 , he still wanted to take his chances at a repair shop. Geib, the owner, 6 the car and told Steinkamp the wheel bearing was failing. 7 it would take a few hours, but the car wasn’t likely to make it that 8 without repairs.

Disappointed, Teinkamp 9 if he could rent a car at such short-notice. Geib 10 the store across the street, but was told its only rental car wasn’t 11 . Finding another place to rent would require a 40-mile drive.

“I must have looked pretty anxious at that time 12 Geib then reached into his pocket, pulled out his 13 and said ‘Take my truck. Fill it up with gas and get going,’ Steinkamp said later. Geib 14 that the truck could go 120 miles per hour if needed.

The men had 15 just 10 minutes before and didn’t know each other’s names, but Geib 16 on lending his truck to Steinkamp. So Steinkamp drove the truck and made it to the 17 . When he returned to the garage seven hours later with a 18 heart, he stuck around to chat with Geib.

Geib turned a terrible day into a good one with a great 19 . That is: Just be 20 and help others if you can.

【1】A.flash B. sign C. tune D. sound

【2】A.forward B. behind C. ahead D. away

【3】A.stop B. race C. leave D. arrive

【4】A.huge B. medium C. large D. tiny

【5】A.However B. Therefore C. Otherwise D. Furthermore

【6】A.checked out B. took apart C. broke up D. switched off

【7】A.Taking B. Fixing C. Sending D. Keeping

【8】A.speed B. distance C. limit D. interval

【9】A.supposed B. believed C. thought D. wondered

【10】A.searched B. opened C. contacted D. managed

【11】A.flexible B. practical C. available D. necessary

【12】A.because B. when C. until D. though

【13】A.coin B. tool C. key D. phone

【14】A.replied B. decided C. learned D. added

【15】A.started B. met C. showed D. agreed.

【16】A.insisted B. kept C. depended D. passed

【17】A.garage B. hotel C. funeral D. house

【18】A.generous B. grateful C. responsible D. merciful

【19】A.example B. subject C. change D. lesson

【20】A.patient B. wise C. kind D. energetic

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