【单选题】Our water supply has been ______ because they are repairing one of the main pipes.
【简答题】Our water supply has been ___c___ off. 我们断水了。
【单选题】.It is the third time that our water supply _______during the day.
【单选题】下列关于遗传的有关说法中,正确的是()
A.
细菌的遗传物质为DNA,其性状的遗传遵循孟德尔遗传定律
B.
细胞质中的遗传物质是RNA,其遗传不遵循孟德尔遗传定律
C.
细菌的遗传物质为DNA或RNA,其性状的遗传不遵循孟德尔遗传定律
D.
豌豆的遗传物质是DNA,其高秆和矮秆的性状遗传遵循孟德尔分离定律
【简答题】UUL Co is a public water supply company which was privatised a number of years ago. As the deputy Finance Director you are reviewing the draft financial statements which contain the following statemen...
【单选题】Our water supply has been _____ because they are repairing one of the main pipes. [ ]
【单选题】Our water supply has been ( ) again. (我们的供水又被切断了。)
【单选题】关于孟德尔的自由组合定律及相关杂交实验,下列说法中不正确的是( )
C.
F 1 产生配子时,遗传因子Y和y分离、R与r分离
D.
F 1 产生雌雄各4种配子,有16种结合方式,且结合的机会均等
【简答题】Our water supply has been ________ for three days. (停供)