【单选题】根据皮亚杰的理论,能够解决7×8=56这个问题的儿童属于()。
【单选题】Which of the following is mentioned as a result of severe desertification?
A.
The shrinking of forest coverage.
B.
The lack of water supplies.
C.
A quickly decreasing production of crops.
D.
A large area of cropland changed into grassland.
【单选题】Oil oxidation as a result of excessively high lube oil temperature, is harmful to a diesel engine Because
A.
oil foaming will always occur
B.
large quantities of oil are consumed
C.
lube oil viscosity is always decreased
D.
corrosive by-products are usually formed
【单选题】Which of the following is the proper pronunciation of "tissue" as a result of assimilation?