Directions: Each of the following sentences has four underlined parts marked A, B, C and D. Identify the one that is not correct. Then mark the corresponding letter on the Answer Sheet with a single line through the center.
Section A
Now the test will begin.
1.
A. a conference.
B. He’ll have a conference next Friday.
C. He’s waiting for the man in his office.
D. He won’t be available until next Friday.
图中标志的含义是 。
A. 下陡坡
B. 滑行
C. 下行
D. 上陡坡
在x千克水中加入10千克盐,那么6千克这样的盐水浓度为()。