下列不属于我国特有的珍稀动、植物是 [ ]
A．金丝猴
B．白鳍豚
C．海豚
D．银杉
答案：C
—Jenny did very well in maths exam.
—Oh,yeah! She is _____ maths. [ ]
A. weak in
B. angry with
C. good at
D. afraid of
油品密度测量修正值采用（）。
A.内插法
B.靠近法
C.交接法
D.替代法
