He kept yawning in class this morning. That is _____ he stayed up late doing his homework last night.
A．whyB．howC．becauseD．whether
C

試題分析：句意：今天早晨上課他一直在打哈欠。那是因?yàn)樗蛲戆疽沟胶芡韺懠彝プ鳂I(yè)的緣故。通過(guò)分析句子結(jié)構(gòu)，可知這個(gè)句子中包含一個(gè)表語(yǔ)從句，且表示“因?yàn)椤�，這樣的意思，所以用because，選C。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

Have you seen Li Ming recently? I wonder     with his studies.
A．how is he getting alongB．that he gets along well
C．what he is getting alongD．if he is getting along well

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

—Don't you think it necessary that he ________ to Miami but to New York?
—I agree, but the problem is ________ he has refused to.
A．will not be sent；that
B．not be sent；that
C．should not be sent；what
D．should not send；what

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

(2013·安徽，21)From space, the earth looks blue.This is ________about seventy­one percent of its surface is covered by water.
A．whyB．howC．becauseD．whether

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

—We were surprised to hear that the reason_______ she gave for her absence was______ her mother was ill.
—Yes，we saw her mother was at the supermarket that morning.
A．why；thatB．which；thatC．that；becauseD．why；because

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

Courage is a good quality and is ________ it takes to get over difficulties.
A．that B．whatC．whichD．where

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

—I prefer shutting myself in and listening to music all day on Sundays.
— That’s _________ I don’t agree. You should have a more active life.
A．whereB．howC．whenD．what

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

Steve Jobs once said: “I’m convinced that the only thing _______ kept me going was _______ I loved what I did.”
A．which; thatB．that; whatC．that; thatD．which; what

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

What is even more important is______ the earth cooled down, water began to appear on its surface.
A．that B．that as C．which D．which as

查看答案和解析>>

同步練習(xí)冊(cè)答案