不同种类的植物含水量不同,一种植物的含水量大于90%,该植物可能是[ ]
A.水生植物
B.草本植物
C.木本植物
D.干旱环境中的低等植物
答案:A
After several years of observation, the research group ______ the conclusion that language acquisition is
faster when students ______ to the situation where it is spoken.[ ]
A. has come to; expose
B. have arrived at; are exposed
C. has concluded; are exposed
D. have reached; expose
绘制机械图样时,尽量采用1:1的比例