![](https://lstatic.shangxueba.com/jiandati/pc/images/pc_jdt_tittleico.png)
To get an individual with Plant A in cytoplasm and Plant B in nuclear, we should
A、A♀×B♂and backcross with B
B、B♀×A♂and selfing
C、A♀×B♂and backcross with A
D、B♀×A♂and backcross with B
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_panel_vip.png)
A、A♀×B♂and backcross with B
B、B♀×A♂and selfing
C、A♀×B♂and backcross with A
D、B♀×A♂and backcross with B
A、The relieved officer should be completely adapted to the light condition.
B、The relieving officer should know the working state of the navigation equipment.
C、The relieved officer should go to the bridge 20 minutes earlier.
D、The relieving officer should go to the bridge an hour earlier.
A、Please fasten your seat belt and refrain from smoking.
B、Our flight will be delayed because of bad weather conditions.
C、The flight has been cancelled.
D、We will be taking off soon.
A、Helping guests with Check-in and check-out.
B、Greet the guests and escorting guests to the room.
C、Helping guests with Check-in and concierge services.
D、Making reservations and responding to guests’ requests.
A、1/2
B、7/8
C、3/4
D、15/16
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