海淀区2021-2022学年第二学期期中练习菲尔普斯里约奥运会
留学个人陈述
高二英语
本试卷共10页，100分。考试时长90分钟。考生务必将答案答在答题卡上，在试卷上作答 无效。考试结束后，将本试卷和答题卡一并交回。
第一局部知识运用（共两节，30分）第一节（共10小题；每题L5分，共15分）
阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最正确选项，并在答题卡上将该项涂黑。
I was about to sleep when someone knocked on my window. Knock, knock. Then a three-cond pau.
Knock, knock. Immediately I knew it was my best friend, Ben. The knock ]trending was our emergency call which never means anything good.
“What's going on?" I rushed to open the window and asked.演讲比赛技巧
Ben climbed in. "Bad news." He gave me a 2 look, and I immediately knew what it was. My heart
3.1 gave him a nod, and he sighed in respon.turkiye
“Where to?” I asked.
“Virginia.”
“That's far from Florida."
农民的拼音
We looked at each other knowing we were thinking the same. Both Ben and I had parents in the airforce. We were ud to frequent moves.
Ben and I became clo friends since I crashed into Ben's stand and nt plastic cups of lemonade flying into the heavens. At first, I 4 Florida. Everything changed, though, when I 5 rollers-kated into Ben's lemonade stand.
“It must have been fate!” we claimed. But I think that, maybe, there was some 6 in that le
monade, and that as it rained down on us, it cast a spell making us friends forever.
“Maybe your family will get moved to Virginia too." Ben said.
“Yeah, maybe.^^ I knew the chance was low, but I cho to hope.
Ben grinned at me. Though it looked sad, I saw 7 in him too.
"I'll have a lemonade stand 8 fbr you.”
“Then I'll pack my roller-skates.
“Then ril wear a poncho （雨披）
We 9. The humid Florida night clod around us, and I felt a tiny drop of liquid splash on my arm. I knew it was probably rain, but still, I thought that, maybe, it was a drop of magic lemonade, becau nothing on
name.（很多儿童文学作品都试图从一个聪明、温柔的成年人的角度来解释世界，而克利
里创作的人物那么以 只有儿童才能看到的视角来看待世界。带着极大的兴趣，我读了每一本写着贝弗利・克利里名字的书）”可 知，The Mou and the Motorcycleaffluent令作者印象深刻是因为它从儿童的视角来描述世界。应选symmetryD。
combinations[25题详解】推理判断题。根据倒数第四和第三段 “"And my best friend who did her project on dolphins一became a dolphin!’"'Really?” the students said in chorus.（'我最好的一个做海豚项R的朋友变成了一只海豚！''真的 吗？'学生们异口同声地说）”推知，当孩子们得知作者的一个朋友变成了海豚时他们感到很惊讶。应选A。
【26题详解】主旨大意题。根据文章的主要内容，尤其倒数第六段的“I've written eight children's books and have always kept Beverly's n of wonder in mind.（我已经写了八本儿童读物，并一直将贝弗利的好奇心铭记在心）” 和 “I cho children's authors, with a large chunk of my project being about who el? Beverly Cleary!（我选择 了 儿童作家，我的工程很大一局部是关于贝弗利・克利里！）”和最后一段"Thafs what Beverly Cleary taught me. In the hands of a gifted storyteller, anything and so very funny.（这是贝弗利•克利里教我的。在一个 有天赋的小说家手中，一切皆有可能，并且非
常有趣）”可知，本文主要讲述了作者是如何受到贝弗利•克 利里的启发成为一名作家的。应选D。
C
When a chunk of ice fell from a collapsing glaci6r（冰川）on the Swiss Alps' Mount Eiger in 2017, part of the long deep sound it produced was too low for human ears to detect. But the vibrations held a key to calculating the ice avalanche's（崩塌）critical characteristics.
sorrow是什么意思
Low-frequency sound wayes called infrasound that travel great distances through the atmosphere are already ud to monitor active volcanoes from afar. Now some rearchers in this field have switched focus from fire to ice: dangerous blocks snapping off glaciers. Previous work has analyzed infrasound from snow avalanches but never ice, says Boi State University geophysicist Jeffrey Johnson. "This was different J Johnson says. "A signature of a new material has been detected with infirasound.”
Usually glaciers move far too slowly to generate an infrasound signal, which rearchers pick up using detectors that track slight changes in air pressure. But a collap——a sudden, rapid breaking of ice from the glacier's main body-is a prolific infrasound producer. Glacial collaps drive ice avalanches, which po an increasing threat to people in mountainous regions as rising temperatures weaken large fields of ice. A glacier "can become detached from the ground due to melting, causing bigger break- o他 J says University of Florence geologist Emanuele Marchetti, lead author of the new study. As the threat grows, scientists ek new ways to monitor and detect such collaps.
Rearchers often u radar to track ice avalanches, which is preci but expensive and can monitor only one specific location and neighboring avalanche paths. Infrasound, Marchetti says, is cheaper and can detect break-off events around a much broader area as well as multiple avalanches across a mountain. It is challenging, however, to parate a signal into its components (such as traffic nois, individual avalanches and nearby earthquakes) without additional measurements, says ETH Zurich glaciologist Malgorzata ChmieL “The model ud by Marchetti is a first approximation for this；' she says. Isolati
ng the relevant signal helps the rearchers monitor an ice avalanche's speed, path and volume from afar using infrasound.
Marchetti and his colleagues are now working to improve their detectors to pick up more signals across at-risk regions in Europe, and they have t up collaborations around the continent to better understand signals that collapsing glaciers produce. They are also refining their mathematical analysis to figure out each ice cascade's physical details.
