The gravity on Mars is only about ________ of that on Earth.
#17238
A
1/2
B
2/3
C
1/8
D
3/8
推荐题目
_______ provides many hours of air for astronauts in space.
#17237
A
An air tank
B
A power pack
C
A helmet
D
A space sleeping bag
英语共有_____个字母,有_____个元音字母,有_____个辅音字母,半元音字母有_____个。
#17197
A
26, 5, 19, 2
B
26, 5, 20, 1
C
26, 20, 5, 1
D
26, 7, 19, 0
________ is the most important festival in China.
#17287
A
Christmas
B
Spring Festival
C
Mid-autumn Day
D
National Day
Which of the following is caused by the earth’s turning around the sun?
#17288
A
The rising and setting(落下) of the sun and moon.
B
The change of spring, summer, autumn and winter of the year.
C
The change of the day and night.
D
The time in the east is earlier than that in the west.