时间管理是指通过事先规划并运用一定的技巧、方法与工具最大限度地利用自己所拥有的时间，并使之最有意义。
参考答案：对
根据汉语和句子意思填空。
1. My mother ________(工作)very hard.
2. Yang Hong _________(走路)to school every day.
3. Aunt Ling __________(用) the computer to check the train timetable.
4. Information ___________(是) very important.
5. Jim often ___________(写) his homework on the computer.
6. Jim ______________(来)from China?
7. How ____________(是) their father?
8. One of the students ____________(弹) the piano well.
从左到右转录DNA片段3′-AT-TCAG-5′，5′-TAAGTC-3’，其产物为（）
A.5′-GACUUA-3′
B.5′-AUUCAG-3′
C.5′-UAAGUC-3′
D.5′-CTGAAT-3′
E.5′-ATTCAG-3′
