Without the earth’s atmosphere to protect them, astronauts can be exposed to intense radiation from the sun, ____ them at risk of cancer.
#90492
A
to leave
B
leaving
C
having left
D
left
推荐题目
Oil prices have risen by 32 percent since the start of the year，________ a record US $57.65 a barrel on April 4.
#89197
A
have reached
B
reaching
C
to reach
D
to be reaching
Jack had his house _______ last night and he and his family were left homeless.
#97116
A
burning down
B
to burn down
C
burn down
D
burned down
__________of danger in the street at night, she had to go home, with a friend_________ her.
#94580
A
Warned, followed
B
Warning, following
C
Having warned, following
D
Having been warned, following
I would rather________Professor Smith and I would rather you________for him at once.
#88477
A
invite；sent
B
invited；send
C
inviting；sending
D
invite；sending
The angry boy looked at his mother and shouted out the words ________ in his heart for many years.
#96581
A
having been hidden
B
hidden
C
hiding
D
to hide