题目内容
（请给出正确答案）
[单选题]
I wonder____（）
A.wheredoeshelive
B.how old he is
C.whatishedoing
D.howsoonwillhebeback
答案
B、how old he is
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
答案
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.wheredoeshelive
B.how old he is
C.whatishedoing
D.howsoonwillhebeback
答案
B、how old he is
如果结果不匹配，请 联系老师 获取答案
更多“I wonder____（）”相关的问题
A.in the position of
B.because
C.At the time whe
D.the thing that
We have reached a point ______ a change is needed.
A. where
B. that
C. which
D. when
Maria Mitchell(1818-1889,the first woman astronomer(天文学家)in the United States, was born in Nantucket. Massachusetts. Her parents valued education and insisted on giving her the same quality of education that boys received.
Her father. William Mitchell, was an astronomer and teacher himself. When he built his own school, Maria became a student and also a teaching assistant to him. At home. Marias father taught her to watch the stars and other natural objects in space using his personal telescope(望远镜).
Later she went to work at the library of the Nantucket Atheneum. Over the next tweny years. she further developed her interest in reading as many books as she could.She spent her nights watching the sky closely with her father.
On October 1, 1847,Maria discovered a comet(彗星 )by merely using a two-inch telescope. Some years before, King Frederick VI of Denmark had set up prizes to each discover of a"telescopic comet". The prize was to be given to the"first discoverer"of each such comet because comets were often discovered by more than one person.
There was once a question of who should be the winner. As the story goes, francesco de Vico had discovered the same comet two days later, but had reported it to the European vor. She won the prize in 1848 and became a big name the world over. The comet was named“ Miss mitchell&39;s Comet.”
What ean be learnt about Marias parents according to the text？
A.They came from low-income families.
B.They gave Maria equal chance for education
C.They were both astronomers
D.They were both teachers.
When did Franeeseo de Vico discover the comet？A.In1818
B.In1889
C.In1848
D.In1847
What problem did Maria meet with in winning the prize？A.She named the comet on her own
B.She did not use the required telescope.
C.She did not report her discovery in time
D.She discovered the comet with her father
Whe played the most important role in Maria's great achievement？A.King FrederickⅥ
B.Francesco de Vico
C.Her father
D.Her mother
请帮忙给出每个问题的正确答案和分析，谢谢！
A.i⁴ⁿ=1，n∈Z
B.i⁴ⁿ⁺¹=i，n∈Z
C.i⁴ⁿ⁺²=-1，n∈Z
D.iⁿ+iⁿ⁺¹+iⁿ⁺²+Iⁿ⁺³=0，n∈Z
E.iⁿiⁿ⁺¹iⁿ⁺²Iⁿ⁺³=1，n∈Z
F.i⁴ⁿ⁺³=-i，n∈Z
______ I'd have told you.
A．If I would have known it
B．If I had have known it
C．Had I known it
D．Should I known it
