I'll _________ six hamburgers, please. [ ]
A. take
B. make
C. cake
答案:A
In recent years the environmental pollution has been _________ than before.
A.so serious
B.serious
C.more serious
D.too serious
土原性线虫是指
A.以上都不是B.人与土壤接触感染的线虫C.成虫在肛周产卵D.生活史属于直接发育型的线虫E.幼虫在外界土壤中发育的线虫