MS培养基()母液配制时,可以把称量好的化合物在水中混合溶解。
A、蔗糖
B、激素
C、铁盐
D、微量元素
参考答案:D
—— Are you a visitor here?
—— That’s right.I___round the world and now my dream of coming to China___true.
A.have traveled; has come
B.was traveling; had been come
C.am traveling; has come
D.have traveled; has been come
驾驶货车想要在路口右转时,(有直行道)遇到此情景,正确的做法有:()
A.占用非机动车道右转
B.快速右转,通过路口
C.减速让直行车先行
D.避免将车停在人行横道上