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【单选题】
豌豆的高茎对矮茎显性,现有一株高茎豌豆自交,后代既有高茎豌豆又有矮茎豌豆,若让后代全部高茎豌豆进行自交,则所有自交后代的表现型之比为 [     ]
A.
5:3
B.
5:1
C.
3:1
D.
1:1
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举一反三
【单选题】Most of the artists to the party were from that university.
A.
invited
B.
to invite
C.
had been invited
D.
being invited
【单选题】下列那种砧木采用扦插繁殖
A.
山丁子
B.
山梨
C.
山桃
D.
贝达
【单选题】家庭电路中电能表的作用是
A.
测量电流
B.
测量电压
C.
显示所用的电能
D.
控制总电路
【单选题】Most of the artists ___________ to the party were from South Africa.
A.
to invite
B.
invited
C.
had been invited
【简答题】Most of the artists ______ to the party were from South Africa. A.to be invited B.invited C.being invited D.had been invited
【单选题】Most of the artists ______ to the party were from China. [     ]
A.
invited
B.
to invite
C.
being invited
D.
to be invited
【单选题】Most of the artists to the party were from South Africa.
A.
invited
B.
to invite
C.
being invited
D.
had been invited
【单选题】人在室温静止状态下主要的散热方式是
A.
辐射
B.
传导
C.
对流
D.
蒸发
E.
升华
【单选题】以下哪一组命令用于完成创建VLAN 20,并将某个端口作为接入端口分配给VLAN 20的过程。
A.
Switch(config)#vlan 20 Switch(config)#Interface gig x/y Switch(config-if)#switchport access vlan 20
B.
Switch(config)#vlan 20 Switch(config)#Interface vlan 20 Switch(config-if)#switchport trunk native vlan 20
C.
Switch(config)#Interface gig x/y Switch(config-if)#vlan 20 Switch(config-vlan)#switchport access vlan 20
D.
Switch(config)#vlan 20 Switch(config)#Interface vlan 20 Switch(config-if)#switchport access vlan 20
【单选题】Most of the artists will go to the United States next week.The rest to visit Japan.
A.
has
B.
plans
C.
are
D.
is
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