(),下颌骨显宽于眉骨和颧骨。
A.方形脸型
B.钻石脸型
C.圆形脸型
D.长脸型
参考答案:A
—Did you find the missing couple in the mountain yesterday?
—No, but we ______ to get in touch with them ever since.
A.had tried
B.have tried
C.have been trying
D.had been trying
下列属于营养必需脂肪酸的是()
A.软脂酸
B.亚麻酸
C.硬脂酸
D.油酸
E.十二碳脂肪酸