We had to learn chemical（）at school but I can only remember H₂O for water.

单项选择题At the restaurant, the only（）to chicken was beef.

A.choice
B.option
C.selection
D.alternative

单项选择题After retiring, he（）his hobby of stamp collecting.

A.pursued
B.pursuit
C.followed
D.chased

单项选择题The company has（）some major changes in the last five years.

A.stood
B.suffered
C.undergone
D.tolerated

单项选择题It was difficult to（）how many trees had been destroyed.

A.measure
B.test
C.estimate
D.evaluate

单项选择题The question of salary increases is high on the（）

A.agenda
B.procedure
C.schedule
D.budget

单项选择题Throughout his life, Henry Moore（）an interest in encouraging art in the city of Leeds.

A.contained
B.secured
C.reserved
D.maintained

单项选择题Franklin's ability to learn from observations and experience（）greatly to his success in public life.

A.contributed
B.owed
C.attached
D.related

单项选择题He made an excellent speech, and everything he said was to the（）

A.sense
B.meaning
C.focus
D.point

单项选择题From this amount you need to（）something to cover utility bills.

A.contribute
B.attribute
C.subtract
D.contract

单项选择题You didn't have to write the essay if you didn't want to. It was（）

A.compulsory
B.suitable
C.alternative
D.optional