水蜜桃味甜,毛桃味酸,但适应性强。将水蜜桃的接穗接到毛桃的砧木上,成活后结出的果

题型:选择题

问题:

水蜜桃味甜,毛桃味酸,但适应性强。将水蜜桃的接穗接到毛桃的砧木上,成活后结出的果实的果味是[ ]

A.酸甜各半

B.与水蜜桃一样甜

C.不酸也不甜

D.与毛桃一样酸

考点:植物无性生殖的应用
题型:选择题

Read the passage carefully. Then answer the questions or complete the statements in the fewest possible words.

Hidden deep in our subconscious is an idyllic(牧歌般的,田园诗式的)vision. We see ourselves on a long trip that spans the continent. We are traveling by train. Out the windows, we drink in the passing scene of cars on nearby highways, of children waving at a crossing, of cattle grazing on a distant hillside, of smoke pouring from a power plant, of row upon row of corn and wheat, of flatlands and valleys, of mountains and rolling hillsides, of city skylines and village halls. But uppermost in our minds is the final destination. On a certain day at a certain hour, we will pull into the station. Bands will be playing and flags waving. Once we get there, so many wonderful dreams will come true and the pieces of our lives will fit together like a completed jigsaw puzzle. How restlessly we pace the aisles, damning the minutes for hanging around—waiting, waiting, waiting for the station. “When we reach the station, that will be it!” we cry. “When I’m 18.”; “When I buy a new 450SL Mercedes Benz!”; “When I put the last kid through college.”; “When I paid off the mortgage!”; “When I get a promotion.”; “When I reach the age of retirement, I shall live happily ever after!” Sooner or later, we must realize there is no station, no one place to arrive at once and for all. The true joy of life is the trip. The station is only a dream. It constantly outdistances us. “Relish(享受)the moment” is a good motto, especially when coupled with Psalm 180: 24: “This is the day which the Lord hath made; we will rejoice and be glad in it.” It isn’t the burdens of today that drive men mad, it is the regrets over yesterday and fear of tomorrow. Regret and fear are twin thieves who rob us of today. So stop pacing the aisles and counting the miles. Instead, climb more mountains, eat more ice cream, go barefoot more often, swim more rivers, watch more sunsets, laugh more, cry less. Life must be lived as we go along. The station will come soon enough.

(Note: Answer the questions or complete the statements in NO MORE THAN TWELVE WORDS.)

小题1:What does the author of this passage compare life to?

______________________________________________________________________________.

小题2: Hidden in the uppermost part of our minds is________________________________.

小题3:Life is made dull and boring by______________________________________

小题4:According to the author, what is the true meaning of life?

___________________________________________________________________________

题型:选择题

肺功能示:1秒钟用力呼气容积占用力肺活量比值<60%,最大通气量低于预计值的80%;残气容积增加,残气容积占肺总量的百分比>40%。

最可能的诊断是()

A.慢性阻塞性肺气肿

B.支气管哮喘

C.肺间质纤维化

D.大叶性肺炎

E.急性支气管炎

题型:选择题

关于三维超声成像的显示方法,叙述正确的有()。

A.基于灰阶等值面重建的表面成像模式

B.基于表面成像重建的透明显示模式

C.基于体素重建的表面成像模式

D.基于体素重建的模式

E.基于淡化组织灰阶信息的体素重建透明模式

题型:选择题

在不允许卖空的情况下,当两种证券的相关系数为( )时,可以通过按适当比例买入这两种证券,获得比这两种证券中任何一种风险都小的证券组合。

A.-1

B.-0.5

C.0.5

D.1

题型:选择题

以下关于国际法上的领土主权含义的表述中不正确的是:

A.领土主权是国家在其领土范围内享有的最高权力,是国家主权的主要内容和表现,包括所有权和统治权两个方面

B.领土主权及于领土的全部范围,在领陆、领水、领空以及领陆、领水下的底土均能行使

C.领土主权不可侵犯

D.领土主权不得施以任何限制

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