Scientists are increasingly _____ that the earth is getting hotter because of carbon dioxide and other gases. 
#19733
A
convinced
B
confident
C
concerned
D
conscious
推荐题目
Sometimes the same word has ________ meaning,which can be ________.
#17775
A
different slightly;confused
B
slight different;confusing
C
slightly different;confusing
D
different slight;confused
American is an ________ country. You can hear _______ every where.
#18807
A
English-spoken ; English speaking
B
English-speaking ; English spoken
C
speaking English ; English spoken
D
spoken-English ; English speaking
 There are plenty of jobs ___ in the western part of the country.
#18630
A
present
B
available
C
precious
D
convenient