正确答案: B

义和团围攻了使馆56天 围攻了西什库教堂63天

题目：填入句中横线处，与上下文衔接最恰当的一项是由于清朝政府的破坏，________，________，都没能攻下。

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学习资料的答案和解析：

[单选题]_________

根据以下内容，回答下面的题目。Insure means to protect _51_ a loss of money．Most people can budget their money so that their income will cover expected expenses _52_ food, clothing, housing, and public services．But, there is no way to know _53_ who will suffer a crisis (危机) such as a serious illness, fire, flood, or a car accident．Such crises usually _54_ great expense．Even if people could predict crises, it would be hard to save enough money to _55_ the expenses．Insurance is a system _56_ a company collects money from many individuals and then pays certain expenses whenever one of those insured individuals is faced with a certain crisis．An insurance policy _57_ how much the insurance costs and how much the company will pay when a policy holder is faced with a certain crisis．There are many different kinds of insurance, _58_ hospital, motor-car and fire．Insurance can be rather expensive but most people buy insurance of some kinD．Insurance is something _59_ people buy and hope they will _60_ need．_________

such as

[单选题]Oceania is a________ landmass．

B separate

[单选题]以下合同中，债权人不能在债务人履行债务时依法享有留置权的是（　　）

运输合同

[单选题]下列关于M型受体的叙述，错误的是（　　）

存在于神经肌肉接头的终板膜上

[单选题]肺换气的原动力是（　　）

呼吸肌的舒缩活动

[单选题]影响细胞膜上单纯扩散的因素是（　　）

与物质的脂溶性有关

[单选题]尿沉渣计数(Addis计数)中白细胞的参考值为（　　）

<100万/12h

[单选题]支配上斜肌的神经是 （　　）

滑车神经