单项选择题：下列肿瘤在组织学上不会呈筛状排列的是（） A.乳腺癌 B.大汗腺囊性瘤 C.卵巢癌

题型：解答题

火车每小时行驶120千米，小汽车每小时比火车慢40千米，小汽车每小时行驶多少千米7

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题型：阅读理解

阅读理解。

An allergy (过敏反应) is a strong reaction to a substance. Many things can cause

allergies. The most common cause is pollen (花粉), which is usually produced by trees in

the spring, grasses in the summer and weeds in the fall, as part of their reproductive

process.

Other causes include organisms, chemicals, plants and dead skin particles (微粒) from

dogs and cats can also cause allergic reactions. So can insect stings and some food.

The most common kind of allergic reactions is itchy (痒的), watery eyes and a blocked

or watery nose. Allergies can also cause red, itchy skin. Some reactions can be life-

threatening, for example, when breathing passages become blocked.

It is not always easy to avoid allergies. Drugs may offer an effective treatment.

Another treatment used in some cases is called immunotherapy (免疫疗法). A patient is

injected with small amounts of the allergy-causing substance. The idea is that larger and

larger amounts are given over time until the patient develops a resistance in his body.

In the United States, experts estimate that up to 8% of young children have food

allergies. Every year these allergies cause about 30,000 cases with severe reactions that

require immediate treatment. It can result in breathing trouble and in some cases death.

It is said that about 100 to 200 people will die. It says most of the reactions are caused

by peanuts and tree nuts like walnuts.

People can also be allergic to medicines. The American Academy of Allergy, Asthma and

Immunology says about 10% of bad reactions to commonly used medicines are allergic. In

other words, a person's immune system overreacts and produces an allergic reaction. The

most common reactions include skin rashes (皮疹), itching, breathing problems and swelling

in areas such as the face.

1. Allergies seldom occur in winter because _____. [ ]

A. plants don't flower in cold weather

B. people usually wear thick clothes

C. pollen is active below freezing point

D. the weather is not too cold for viruses

2. What will happen if one's breathing passages get blocked? [ ]

A. It is nothing serious.

B. One's life is at risk.

C. One has to be sent to hospital.

D. One is sure to breathe easily.

3. According to immunotherapy, the patient is supposed to _____. [ ]

A. take some medicines to produce antibodies

B. have immediate operations

C. be given the allergy-causing substance until he develops a resistance

D. be exposed to enough allergy-causing substances

4. The best title would be "_____". [ ]

A. The ABCs of Allergies

B. The Cause of Allergies

C. The Treatment of Allergies

D. The Prevention of Allergies

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题型：单项选择题

“总部统一组织，网省公司具体实施”招标范围主要为10—35千伏主要设备和（）线路主要材料等。

A.220千伏及以上

B.110千伏及以下

C.35千伏及以上

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题型：单项选择题

文字资料

根据以下资料，回答86-90题。
固定资产投资稳定增长。2006年江苏省完成全社会固定资产投资10063.65亿元，比上年增长20.3%。其中，城镇固定资产投资完成7473.7亿元，增长20.2%；农村固定资产投资2589.95亿元，增长20.7%。在全社会投资中，国有及国有控股投资2528.37亿元，下降0.3%；外商、港澳台经济投资1727.58亿元，增长16%；民间投资5807.7亿元，增长33.8%，其中私营个体经济投资3110.67亿元，增长36.6%。民间投资占全社会投资的比重达57.7%，比上年提高5.8个百分点。
投资结构进一步调优。在城镇同定资产投资中，第一产业投资15.45亿元，比上年增长21.9%；第二产业投资3439.08亿元，增长22.3%；第三产业投资4019.17亿元，增长18.4%。工业投资3391.17亿元，增长22.2%；其中通信设备、计算机及其他电子设备制造业472.14亿元，交通运输设备制造业197.71亿元，通用设备制造业投资248.59亿元，分别增长50.4%、40.7%和56.2%。第三产业投资中，房地产开发投资1901.01亿元，增长23%；交通运输仓储和邮政业投资548.51亿元，增长2.5%；水利、环境和公共设施管理业投资673.25亿元，增长17%；教育投资139.96亿元，增长5.6%；卫生、社会保障和社会福利业投资56.22亿元，增长39.2%。重点调控行业投资明显下降，城镇投资中钢铁工业投资130.71亿元，下降17.5%：水泥工业投资24.76亿元，下降13.2%；纺织工业投资273.87亿元，增长31.5%，增幅下降15.6个百分点。

以下说法不正确的一项是( )。

A．2005年江苏省民间投资额约为4340亿元

B．城镇固定资产投资中，第二产业的投资增幅最大

C．第三产业中，房地产开发投资增幅最大

D．重点调控行业虽然投资明显下降，但是纺织行业的投资仍然比去年大

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题型：问答题

请根据分离定理，推导“在均衡状态下，每种证券在均衡点处投资组合都有一个非零的比例”这一结论。

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下列肿瘤在组织学上不会呈筛状排列的是（） A.乳腺癌 B.大汗腺囊性瘤 C.卵巢癌

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