It is difficult to determine which limb of the Moon is fully illuminated().
A、when the Moon is low in the sky at rising or setting
B、at the new Moon phase
C、when taking Moon sights during daylight
D、when the terminator is nearly vertical
A、when the Moon is low in the sky at rising or setting
B、at the new Moon phase
C、when taking Moon sights during daylight
D、when the terminator is nearly vertical
A、Because it is difficult to plan and manage B、Because it is cannot be well categorized C、Because it is a difficult work for people to undergo D、Because it is seldom researched by research
A、It is getting more difficult for a woman to find her husband. B、It is getting increasingly difficult to start a family. C、It is getting more difficult for a man to find his wife. D、It is getting increasingly difficult to develop an intimate relationship with your spouse.
A、stretches too much B、is too difficult to make fast C、parts too readily D、is too susceptible to mildew
A、A.stretches too much B、B.is too difficult to make fast C、C.parts too readily D、D.is too susceptible to mildew
A、it is difficult for them to finish the job in time B、difficult for them to finish the job in time C、they have much difficulty to finish the job in time D、that difficult for them to finish the job in time
A、The ability to read a newspaper. B、It is difficult to judge because it differs for each situation. C、Being a multilingual. D、Being a native speaker.
A、it difficult for them to finish the job in time B、difficult for them to finish the job in time C、they have much difficulty to finish the job in time D、that difficult for them to finish the job in time