31As is known to us all,________tiger is in________danger of becoming extinct.
A.the, a
B.the, /
C./, /
D./ , the
开始考试练习点击查看答案32The spaceship flies at about eleven kilometers________second.
A./
B.the
C.a
D.an
开始考试练习点击查看答案33India and China are of________same continent.
A./, the
B.The, the
C./, /
D./, a
开始考试练习点击查看答案34Many people agree that_______good knowledge of English is a must in________international trade today.
A.the, an
B.a, /
C.the, the
D./, the
开始考试练习点击查看答案35Tom has just finished writing a________article.
A.nine-hundred-words
B.nine-hundreds-word
C.nine-hundred-word
D.nine-hundreds-words
开始考试练习点击查看答案36The teacher told us to write________80-word composition in English.
A.the
B.an
C.a
D./
开始考试练习点击查看答案37In_______most countries, a university degree can give you________flying start in your career.
A.the, a
B.the, /
C./, /
D./, a
开始考试练习点击查看答案38It is generally believed that only________of our brain________.
A.ten percent, is used
B.ten percents, is used
C.ten percent, are used
D.percent ten, are used
开始考试练习点击查看答案39We’ve all heard of Thomas Edison,________who invented the electric light and many other things.
A.man
B.mans
C.the man
D.men
开始考试练习点击查看答案40The most important thing about cotton in history is________role that it played in the IndustrialRevolution.
A./
B.an
C.the
D.a
开始考试练习点击查看答案