1 . What made him excited was that he was offered ___________amazing opportunity to work with leading scientists in the field. (用适当的词填空)

2 . Smart farming has a real potential to deliver ______ more productive and sustainable form of agricultural production. (用适当的词填空)

3 . Every day Jack made ________ effort to go toward what he didn’t understand, which left ________ deep impression on me.

A．an; a

B．the; the

C．an; the

D．不填;不填

4 . As____________ result, they burned more fat during walks on an empty stomach than when they had eaten first. (用适当的词填空)

5 . 加利西亚是西班牙的一个自治区。
Galicia is _________ _________ _________of Spain.

6 . The boy blessed with ________ remarkable gift ________ painting is meant to shape the art community.

A．the; for

B．a; of

C．the; of

D．a; for

7 . ________ substantial number of mothers with young children are deterred from undertaking paid work because they lack access to childcare. (用适当的词填空)

8 . It is___________ educational movie. It makes me want to be___________ useful person.

A．a; a

B．a; an

C．an; an

D．an; a

9 . Wild is ______ one-hour documentary on CCTV. I have never seen such ________ exciting programme.

A．a; an

B．an; a

C．a; a

D．an; an

10 . In a sometimes callous (冷漠的) world where people can be so focused on what they're doing, a random act of kindness can make ________ difference. （用适当的词填空）