呈扁心形，基部钝圆，左右不对称，味苦的药材是（）
A.桃仁
B.砂仁
C.薏苡仁
D.苦杏仁
E.酸枣仁
参考答案：D
— 2008 is drawing near. Any changes in Beijing?
— Yes, more stadiums arc being built, and ______ people are learning English. [ ]
A. more and more
B. the more and the more
C. the more and more
D. more and the more
在启动期间，摩擦块打滑通常会引起分油机（）。
A.产生振动
B.发出臭气
C.转速过高
D.发出噪声
