Maria often has a walk with（)parents in the morning.

Maria often has a walk with__parents in the morning.

A. she

B. her

C. their

A.she

B.their

C.Her

A.A. has been

B.B. is

C.C. has been being

D.D. was

A.fraction

B.section

C.portion

D.trifle

Nic () a job in a bank, but to our surprise he didn’t take it.

A、is offered

B、offered

C、was offered

D、has offered

To search for any information needed on tomorrow’s Web, one only has to _____.

［A］wade through screen after screen of extraneous data

［B］ask the Web to dispatch some messenger to his door

［C］use smart software programs called “agents”

［D］explore Web sites by the thousands and pick out what’s relevant

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！

The Moon, which has undergone a distinct and complex geological history, presents a

striking appearance. The moon may be divided into two major terrains: the maria (dark

lowlands) and the terrace(bright highlands). The contrast in the reflectivity (the capability

of reflecting light) of these two terrains suggested to many early observers that the two

(5) terrains might have different compositions, and this supposition was confirmed by missions to

the Moon such as Surveyor and Apollo. One of the most obvious differences

between the terrains is the smoothness of the maria in contrast to the roughness of the

highlands. This roughness is mostly caused by the abundance of craters; the highlands are

completely covered by large craters(greater than 40-50 km in diameter), while the craters

(10) of the maria tend to be much smaller. It is now known that the vast majority of the Moon's

craters were formed by the impact of solid bodies with the lunar surface.

Most of the near side of the Moon was thoroughly mapped and studied from telescopic

pictures years before the age of space exploration. Earth-based telescopes can resolve

objects as small as a few hundred meters on the lunar surface. Close observation of

(15) craters, combined with the way the Moon diffusely reflects sunlight, led to the

understanding that the Moon is covered by a surface layer, or regolith, that overlies the

solid rock of the Moon. Telescopic images permitted the cataloging of a bewildering array

of land forms. Craters were studied for clues to their origin; the large circular maria were

(20) seen. Strange, sinuous features were observed in the maria. Although various land forms

were catalogued, the majority of astronomers' attention was fixed on craters and their

origins.

Astronomers have known for a fairly long time that the shape of craters changes as

they increase in size. Small craters with diameters of less than 10-15 km have relatively

(25) simple shapes. They have rim crests that are elevated above the surrounding terrain,

smooth, bowl-shaped interiors, and depths that are about one-fifth to one-sixth their diameters.

The complexity of shape increases for larger craters.

What does the passage mainly discuss？

A．What astronomers learned from the Surveyor and Apollo space missions

B．Characteristics of the major terrains of the Moon

C．The origin of the Moon's craters

D．Techniques used to catalogue the Moon's land forms

The song ____________by children.

A. is often sung

B. was often sung

C. sings

D. has often sung

A．She has often watched Chinese films since the cable TV was installeD

B．She has often watched English films since the cable TV was installeD

C．She has often watched Chinese films since the Internet was installe

D．She has often watched Chinese films since the Internet was unsealle

D．