[单项选择]

Most growing plants contain much more water than all other materials combined. C. R. Barnes has suggested that it is as proper to term the plant a water structure as to call a house composed mainly of brick a brick building. Certain it is that all essential processes of plant growth and development occur in water. The mineral elements from the soil that arc usable by the plant must be dissolved in the soil solution before they can be taken into the root. They are carried to all parts of the growing plant and are built into essential plant materials while in a dissolved state. The carbon dioxide (CO₂ ) from the air may enter the leaf as a gas but is dissolved in water in the leaf before it is combined with a part of the water to form simple sugars --’the base material from which the plant body is mainly built. Actively growing plant parts are generally 75% to 90% water. Structural parts of plants, such as woody stems no longer actively growin
A. the functions of carbon dioxide and water
B. the role of water in a growing plant
C. the process of simple sugar formation
D. the synthesis of water with carbon dioxide

[单项选择]

Most growing plants contain much more water than all other materials combined. C. R. Barnes has suggested that it is as proper to term the plant a water structure as to call a house composed mainly of brick a brick building. Certain it is that all essential processes of plant growth and development occur in water. The mineral elements from the soil that arc usable by the plant must be dissolved in the soil solution before they can be taken into the root. They are carried to all parts of the growing plant and are built into essential plant materials while in a dissolved state. The carbon dioxide (CO₂ ) from the air may enter the leaf as a gas but is dissolved in water in the leaf before it is combined with a part of the water to form simple sugars --’the base material from which the plant body is mainly built. Actively growing plant parts are generally 75% to 90% water. Structural parts of plants, such as woody stems no longer actively growin
A. a plant efficiently utilizes most of the water it absorbs
B. carbon dioxide is the essential substance needed for plant development
C. a plant needs more water than is found in its composition
D. the stronger the wind, the more the water vapor loss

[单项选择]The articles made of leather cost much more than ______ made of plastic.
A. that
B. those
C. ones
D. it

[单项选择]It is a beautiful dress but it is much more than I can ______.


A. choose
B. buy
C. offer
D. afford

[单项选择]Society is now much more diverse than ever before.


A. colorful
B. attractive
C. flexible
D. varied

[单项选择]Some days go by much more quickly than others. Some hours seem as if they ______.
A. never end
B. would never end
C. would have ended
D. had ended

[单项选择]This dress is much more fashionable than（）you bought yesterday.
A. it
B. one
C. the one
D. which

[单项选择]The soup my mother makes is much more tasty than （　） that you can order in a restaurant.
A. it
B. this
C. those
D. these

[单项选择]To know how to ______ is much more important than to learn facts


A. study science
B. study
C. study facts

[单项选择]There are much many more people than I expected.
A. There
B. much
C. many
D. than

[单项选择]school is much larger than ．
A. Our；your
B. Our；yours
C. Ours；yours
D. We；you

[单项选择]The federal courts are much better than the Senate Judicial or ethics committees in determining and assessing those violations because ______.


A. the federal courts have much bigger power
B. the federal courts are forum for determining and assessing those violations
C. the federal courts are more impartial
D. the federal courts are political arena

[单项选择]Clif ran much faster than the thief did.