女，45岁，主诉：左下后牙食物嵌塞，临床检查发现左下磨牙颌面重度磨耗，咬合面呈一平面。 引起该患者

Many countries are increasing their use of natural gas, wind and other forms of ______.

A．energy

B．source

C．power

D．material

Many countries are increasing their use of natural gas, wind and other forms of______.

A．energy

B．source

C．power

D．material

Many countries are increasing their use of natural gas, wind and other forms of ______ .

A．energy

B．source

C．power

D．material

A.source

B.power

C.material

D.energy

Many countries will grant permission for the use of space-based solar power soon．

A．Right

B．Wrong

C．Not mentioned

A．A.meeting; increased

B．B.to meet; increased

C．C.to meet; increasing

D．D.meeting; increasing

The U.S. has to deal with the problems arising from vehicle use he cause______.

A．most Americans are reluctant to switch to public transportation systems

B．the present level of oil prices is considered unacceptable

C．other countries will protest its increasing greenhouse emissions

D．it should take a lead in conserving natural resources

The US has to deal with the problems arising from vehicle use because ______.

A．most Americans are reluctant to switch to public transportation systems

B．the present level of oil prices is considered unacceptable

C．other countries will protest its increasing greenhouse emissions

D．it should take a lead in conserving natural resources

Many countries will grant permission for the use of space-based solar power soon．

A．Right

B．Wrong

C．Not mentioned

The U. S. has to deal with the problems arising from vehicle use because ______.

A．most Americans are reluctant to switch to public transportation systems

B．the present level of oil prices is considered unacceptable

C．other countries will protest its increasing greenhouse emissions

D．it should take a lead in conserving natural resources