苗木移植的作用中,说法错误的是()。
A、利于苗木形成良好的树形
B、形成良好的根系
C、利于苗木规格一致
D、利于提前开花
参考答案:D
用所给动词的适当形式填空。
1. Paper _______(invent) by Cai Lun.
2. The battery-opcrated slippers _____(use) for seeing in the dark.
3. I like the watches_______(make) in Switzerland.
4. Basketball _______(play) all over the world.
5. The car ______(invent) in 1885.
血培养应采用的抗凝剂是
A.乙二胺四乙酸(EDT
B.枸橼酸钠
C.草酸盐
D.聚苯乙烯磺酸钠(SP
E.肝素