题目

下图是某一植物叶片结构示意图，请分析回答下列问题。 （1） 不同植物的叶片内部结构基本相似，都是由[①④]、[③][⑧] 三部分组成。 （2） 图中的[②]含叶绿体比较多，细胞排列比较紧密和整齐，它叫_，图中[⑤]含叶绿体比较少，细胞排列比较疏松，它叫。 （3） ⑧中具有导管和筛管，导管的作用是，筛管的作用是。Mrs. Scott and her husband are both  1 . They teach in the same school. They go to school  2 . They leave home at eight o’clock in the morning.And they  3  home at four o’clock in the afternoon.Sam Scott and his sister Ann are  4  . Sam  5  by bus, and Ann goes to school  6 .Some of  7  friends walk to school, too. Sam and Ann get home at four o’clock in the afternoon.They  8  before dinner, and they watch TV  9  dinner.They usually  10  early, especially(尤其) on school nights.【小题1】A．studentsB．teachersC．workersD．doctors【小题2】A．by the carB．by carC．on carD．on feet【小题3】A．get backB．get toC．get upD．get on【小题4】A．studentsB．teachersC．workersD．doctors【小题5】A．goes to workB．goes to schoolC．goes to the parkD．goes to the library【小题6】A．on footB．by carC．by busD．by bike【小题7】A．themB．theyC．theirD．theirs【小题8】A．watch TVB．do their homeworkC．play compuer gamesD．fly kites【小题9】A．beforeB．inC．afterD．between【小题10】A．get upB．go to bedC．go homeD．go to school