研究豌豆种子萌发时,将豌豆种子放在培养皿内的棉花上,设置如下四组实验,数天后记录

题型:填空题

问题:

研究豌豆种子萌发时,将豌豆种子放在培养皿内的棉花上,设置如下四组实验,数天后记录发芽情况:

(1)选择_______两组作对比试验,可以研究豌豆种子萌发是否需要水分。

(2)由这四组实验现象可以得出,豌豆种子发芽时肯定不需要_______。

考点:种子萌发的条件和过程科学研究方法
题型:填空题

下列句子中各有一处错误,请指出并改正:

( ) __________ 1. He doesn't wonderful tricks any more.

                                        A            B         C        D

( ) __________ 2. She didn't  stop  until she gets to the end.

                                        A       B      C            D

(     ) __________ 3. She  oughts to  drive  to work.

                                A          B          C        D

( ) __________ 4. Don't  afraid of  that dog. It's very kind.

                                  A          B           C                 D

(     ) __________ 5. You must be  carefully. You made a lot of mistakes.

                                           A           B                C                   D

( ) __________ 6. The twins look the same  but  their hobbies are different from.

                                                        A           B               C                   D

( ) __________ 7. Simon couldn't play football outside because his homework.

                                              A                            B         C             D

( ) __________ 8. Must I get  someone to help her? No, you mustn't.

                                 A       B                     C                            D

(     ) __________ 9. How many  is  your telephone number

                                     A         B    C                      D

( ) __________ 10. Not  be  late again next time.

                                  A    B    C                D

题型:填空题

枳实导滞丸的组成药物中不含( )

A.木香半夏
B.黄连白术
C.神曲茯苓
D.枳实黄芩
E.大黄泽泻

题型:填空题

左右锁骨下淋巴干收集()

A、头颈部的淋巴

B、心血管外的淋巴

C、腹腔脏器的淋巴

D、上肢及部分胸壁的淋巴

题型:填空题

用户主要名称表示为user@domain.com,下面的描述哪一项不对?()

A.User是指用户登录名

B.Domain.com是用户所在域的域名

C.@是Active Directory自动添加的分隔符

D.用户登录时必须输入完整的用户主要名称

题型:填空题

由地球站发射给通信卫星的信号通常称为上行信号。

更多题库