Who is Mr. Martin？
A．The manager of the conference
B．A member of the Children's Network
C．The president of the Spears Foundation
D．A major donor to the Spears Foundation

Aiming to retrieve the Mars rover Opportunity, engineers are imitating Mars surface conditions in a testing laboratory.
A．copying
B．mocking
C．simulating
D．pretending

Some children display an unacceptable curiosity about every new thing they encounter.
A．incredible
B．infectious
C．incompatible
D．inaccessible

Our company has been made one of the largest manufacturers in the field ofchemical industry.
A．become, in
B．made, in field of
C．became, in the field
D．been made of, in

Some of the low-end Made-in-China mechanical-electronic products are not selling well in export market as compared with what are termed as high-end ones.
A．on export market
B．in exporting market
C．in exported market
D．in the export market

Find the same meaning as "erase" in the last sentence of the first paragraph.
A．Add.
B．Change.
C．Remove.
D．Store.