题目内容：
Hardly ______when they ran toward it.
A. had the plane landed
B. did the plane land
C. the plane had landed
D. the plane landed
参考答案：
选择题：Hardly ______when they ran toward it.
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- 题目类型：选择题
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成人双上肢全皮层烧伤,其烧伤严重性分度为A 轻度 B 中度 C 重度 D II° E III°
成人双上肢全皮层烧伤，其烧伤严重性分度为A 轻度 B 中度 C 重度 D II° E III°
Ⅱ. Vocabulary and Structure (15 points) Directions, There are 15 incomplete sent
Ⅱ. Vocabulary and Structure (15 points)Directions, There are 15 incomplete sentences in this section.
世界的统一性在于( )
世界的统一性在于（ ）A．存在性B．可知性C．物质性D．精神性
论述磷循环的过程、主要特点及其与水体富营养化的关系。
论述磷循环的过程、主要特点及其与水体富营养化的关系。
健康成人血浆渗透压的正常范围是A 250~270mmol／L B 270~290mmol／L C 290~310mmol／L D 310~
健康成人血浆渗透压的正常范围是A 250~270mmol/L B 270~290mmol/LC 290~310mmol/L D 310~330mmol/LE 330~350mmol/L