澳门日本av免费高清dvd,亚洲熟妇无码va在线播放,国产日产美国国产一区

7．感激的（adj．） grateful．

分析 "感激的"為grateful，形容詞，常用于短語be grateful to sb．for sth．"因某事而對某人感激"，例句：She was grateful to him for being so good to her．他對她這么好，令她很感激．

解答 3．感激的（adj．） grateful

點評考查詞匯的記憶，在平時的學(xué)習(xí)中，要對詞匯的應(yīng)用進(jìn)行積累．

練習(xí)冊系列答案

清華綠卡核心密卷優(yōu)選期末卷系列答案

階段性單元目標(biāo)大試卷系列答案

金版卷王名師面對面大考卷系列答案

復(fù)習(xí)與考試系列答案

年級	高中課程	年級	初中課程
高一	高一免費課程推薦！	初一	初一免費課程推薦！
高二	高二免費課程推薦！	初二	初二免費課程推薦！
高三	高三免費課程推薦！	初三	初三免費課程推薦！
更多初中、高中輔導(dǎo)課程推薦,點擊進(jìn)入>>

相關(guān)習(xí)題

科目：高中英語 來源： 題型：閱讀理解

17．What will power your house in the future？According to scientists at the Massachusetts Institute of Technology （MIT） in the US，it might be artificial leaves．
Natural leaves can change sunlight and water into energy．It is known as photosynthesis（光合作用）．Now researchers have found a way to imitate this process．
The artificial leaf developed by Daniel Nocera and his colleagues at MIT can be seen as a special silicon chip with catalysts（催化劑）．Similar to natural leaves，it can split water into hydrogen and oxygen when put into a bucket of water．The hydrogen and oxygen gases are then stored in a fuel cell，using those two materials to produce electricity，located either on top of a house or beside the house．
Though the leaf is shaped like a poker card，scientists stated that it is promising to be an inexpensive somtoe of electricity in developing countries．"One can imagine villages in India and Africa not long from now purchasing an affordable basic power system based on this technology，"said an American scientist，Docera．
An artificial leaf is not a new idea．The first artificial leaf was invented in 1997but too expensive and unstable for practical use．The new leaf，however，is made of cheap materials，easy to use and highly stable．In laboratory studies，Nocera showed that an artificial leaf could operate continuously for at least 45hours．
The wonderful improvements come from Nocera's recent discovery of several powerful new，inexpensive catalysts．These catalysts make the energy transformation inside the leaf more efficient with water and sunlight．Right now，the new leaf is about 10times more effective at carrying out photosynthesis than a natural one．Besides，the device can run in whatever water is available．
Hopefully，each home could possible have the access to the new application in the future．

71．The purpose of this article is toC．
A．promote the new product B．a(chǎn)sk people to do the research
C．introduce a new kind of energy D．show the process of photosynthesis
72．Which of the following is NOT the advantage of the new leaf？A
A．It has a wonderful fuel cell．
B．It is small in size．
C．It is low in cost．
D．It is convenient for people to use．
73．What conclusion can be drawn from the text？D
A．Docera thought the new leaf is expensive for developing countries．
B．Villages in Africa have benefited a lot from the new invention．
C．Silicon chip can help the new leaf work more effectively．
D．The equipment doesn't necessarily operate in pure water．
74．What's the writer's attitude towards the new device？B
A．Negative． B．Optimistic． C．Doubtful． D．Uncertain．
75．According to the text，what will take place in the future？C
A．New leaves will take the place of natural leaves．
B．Scientists will develop more ways to produce energy．
C．The new invention could be widely used in the future．
D．Developing countries will contribute more to the research．

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

18．The politician insisted that he _______innocent and that he ______at once．（　�。�