正常分娩时最主要的产力是（）

船公司在船上应任命()名船舶保安员，船舶保安员应是()。

As early as in the development of agriculture,men discovered how to make alcoholic drinks from grapes and corn.

I have a [sore] throat from cold.

工商行政管理机关在行政执法时所具有的自由裁量权是指()。

The teacher, rather than the students, is responsible for this matter.

原发性高血压心理治疗首选（）

恐怖主义通常不具有()的特点。

.应始终保持最低级限度的适当防范性保安措施的等级称为保安等级()。

In order to set up her research programme, Shona got____.