When it is winter in China, ______.
A. the USA is tilted toward the sun B. the South Pole is tilted away from the sun
C. the North Pole is tilted toward the sun D. the North Pole is tilted away from the sun
第1题:
A.snow
B.snows
C.is snowing
第2题:
Spring tides occur______.
A.when the moon is new or full
B.when the moon and sun have declination of the same name
C.only when the moon and sun are on the same sides of the earth
D.at the beginning of spring when the sun is over the equator
第3题:
What attention should be paid when bunkering oil in the USA?
第4题:
B
The word “day” has two meanings. When we talk about the number of days in a year, we are using “day” to mean 24 hours. But when we talk about day and night, we are using “day” to mean the time between sunrise and sunset. Since the earth looks like a ball, the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning(旋转) of the earth. At the equator(赤道) day and night are sometimes the same length. They are each twelve hours long. The sun rises at 6 in the morning and sets at 6 in the evening. For six months the North Pole is tilted(倾斜) toward the sun. In those months the Northern Hemisphere(半球) gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than night. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days.
56. When the Western Hemisphere is having day, the Eastern Hemisphere is having ______.
A.both day and night B.day C.neither day nor night D.night
第5题:
The weather in South China is d_________ from that in North China.
第6题:
日落降国旗。()
第7题:
At the start of spring,when the Sun is nearly over the equator
Only when the Sun and Moon are on the same sides of the Earth and are nearly in line
When the Sun and Moon are at approximately 90° to each other,as seen from the Earth
When the Sun,Moon,and Earth are nearly in line,regardless of alignment order
第8题:
when the moon is new or full
when the moon and sun have declination of the same name
only when the moon and sun are on the same sides of the earth
at the beginning of spring when the sun is over the equator
第9题:
conflicted
confused
confined
confirmed
第10题:
lies
lie
lay
lays
第11题:
all living things on the earth depend on the sun for their food
a forest looks dark in winter because it absorbs solar energy
only 0.023 of the energy from the sun is made use of on the earth
greenhouse gases allow heat energy to escape from the earth’ s surface
第12题:
the compass heading is in line with the lubber's line
there is no lost motion in the gimbal rings
no change of heading by compass is observed if you raise and lower the heeling magnet
the gimbal rings do not strike the compass frame when they are tilted
第13题:
Neap tides occur ______.
A.at the start of spring, when the Sun is nearly over the equator
B.only when the Sun and Moon are on the same sides of the Earth and are nearly in line
C.when the Sun and Moon are at approximately 90°to each other, as seen from the Earth
D.when the Sun , Moon, and Earth are nearly in line, regardless of alignment order
第14题:
It often ( ) in winter in the north of China.
A. snow
B. is snowing
C. snows
第15题:
若有如下程序; main() {char a[][9]={"china","Japan","USA","France"}; printf("\'%s\'\n",a[2]); } 则程序运行后的输出结果是( )
A.'Japan'
B.'USA'
C.USA
D.'inaJapanUSAFrance'
第16题:
When the North Pole is tilted toward the sun, the Northern Hemisphere gets _____ sunlight.
A.less B.more C.all D.no
第17题:
第18题:
is most accurate before sunrise
is most accurate after sunset
should only be observed when the Sun's lower limb is above the horizon
is most accurate when the Sun's center is observed on the visible horizon
第19题:
bankruptcy of fine china manufacturers
shrinking of the pottery industry
restructuring of large enterprises
economic recession in Great Britain
第20题:
at the start of spring,when the Sun is nearly over the equator
only when the Sun and Moon are on the same side of the Earth and nearly in line
when the Sun and Moon are at approximately 90°to each other as seen from the Earth
when the Sun,Moon,and Earth are nearly in line,in any order
第21题:
The ensign should be hoisted when the sun rises.
The ensign should be lowered when the sun rises.
The ensign should be hoisted when the sun sets.
The ensign should be lowered when the sun sets.
第22题:
northeast
southwest
southeast
northwest
第23题: