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【单选题】
现有甲、植物(均为二倍体纯种)，其中甲种植物的光合作用能力高于植物，但植物很适宜在盐碱地种植，且相关性状均为核基因控制。要利用甲、植物的优势，培育出高产、耐盐的植株，有多种生物技术手段可以利用。下列所采用的技术手段中，理论上不可行的是 [ ]A.
利用植物体细胞杂交技术，有可能获得满足要求的四倍体杂种目的植株
B.
将植物耐盐基因导入甲种植物的受精卵中，有可能培育出目的植株
C.
两种植物杂交后，得到的F 1 再利用单倍体育种技术，有可能较快获得纯种的目的植株
D.
诱导两种植物的花粉融合，并培育成幼苗，再用秋水仙素处理，有可能培育出目的植株
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【单选题】II. Choose the best topic sentence from the groups blow.
A.
City life is also convenient.
B.
With these attractions, we feel lucky to live in a city.
C.
In fact, in a city there are many places for the citizens to go for entertainment, such as theaters, parks, and recreational areas.
D.
Generally speaking, there are many attractions of living in a city.
【单选题】II. Choose the best topic sentence from the groups blow.
A.
There are different types of social worker careers.
B.
A social worker can help a child find a home.
C.
A mental health social worker helps people deal with depression.
D.
A medical social worker helps people with diseases.
【单选题】II. Choose the best answers. As students, we _________ study hard.
A.
can
B.
may
C.
must
D.
could
【简答题】Task 1 / Overview Summarize the main idea of each paragraph of Text A Para Main idea 1 2 3 4 5
【单选题】II. Choose the best topic sentence from the groups blow.
A.
A breakthrough in one of these areas will hopefully provide a means of relieving both the overstretched oil market and the environment.
B.
Researchers in the automobile industry are experimenting with different types of engines and fuels as alternatives to the conventional gasoline engines.
C.
One new type of engine, which burns diesel oil instead of gasoline, has been available for several years.
D.
.Finally, several automobile manufacturers are experimenting with methanol, which is a mixture of gasoline and methyl alcohol, as an automobile fuel.
E.
A further type is the gas turbine engine, which can use fuels made from gasoline, diesel oil, kerosene and other petroleum distillates.
F.
The increasing depletion of oil reserves, along with environmental concerns, have prompted some radical developments in car design over the past few years.
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