单项选择题
A.argumentative B.investigative C.ambitious D.intuitive
We had to learn chemical（）at school but I can only reme...
单项选择题We had to learn chemical（）at school but I can only remember H2O for water.
A.principles B.prescriptions C.formula D.formulae
At the restaurant, the only（）to chicken was beef.A.choi...
单项选择题At the restaurant, the only（）to chicken was beef.
A.choice B.option C.selection D.alternative
After retiring, he（）his hobby of stamp collecting.A.pur...
单项选择题After retiring, he（）his hobby of stamp collecting.
A.pursued B.pursuit C.followed D.chased
