______ to nuclear radiation, even for a short time, may influence genes in human bodies.
#93806
A
Exposed
B
Being exposed
C
To expose
D
Having exposed
推荐题目
_____made both her parents angry.
#94881
A
Betty comes home lately at night
B
Betty coming home late at night
C
Betty came home late at night
D
Betty’s coming home late at night
Most computer users think it necessary for their software ________ regularly．
#89719
A
to up date
B
to be updated
C
to have been up dated
D
to have updated
Chinese President Xi Jinping promised on Sunday, “We’ll make great efforts the Chinese dream.”
#91256
A
achieving
B
achieved
C
to achieve
D
to have achieved
_____ the hotel for the Ice and Snow Festival in Harbin has already begun.
#92171
A
Booked
B
Booking
C
Bought
D
Buying
Jim took this course, _________ improve his spoken English.
#90282
A
aimed to
B
aiming at
C
aiming to
D
aimed at