胚胎初具人形，超声现象可见早期心脏形成并有搏动，可推断妊娠周数是 （） A.妊娠8

求过点M（5，2），N（3，2）且圆心在直线y=2x-3上的圆的方程．

BEIJING - President Xi Jinping's visit to Russia has enhanced(增加) bilateral strategic mutual trust（双边战略互信） and support, and expanded practical cooperation between the two countries, Chinese Foreign Minister Wang Yi told media on Sunday.

Wang made the remarks while introducing to reporters travelling with the Chinese official delegation(代表团) the fruits of Xi's first foreign trip as China's new head of state, which had taken him to Russia, Tanzania, South Africa, and the Republic of the Congo.

In Russia, Xi and the Russian president Putin had spent eight hours together in meetings and exchanges that could be characterized as frank, practical and congenial, Wang said, adding the two leaders reached important consensus on strategic coordination and set the direction and outlined key sectors for future cooperation.

The two countries have made it clear that they will support each other in promoting their respective development and national renewal, safeguarding core（核心） interests, and independently choosing their own development paths and social and political systems, the foreign minister said.

The two sides agreed that they will closely coordinate in international and regional affairs, uphold the principles of the UN Charter, and jointly promote democracy（民主） in international relations, he said.

China and Russia, during the visit, also promoted their practical cooperation.

During the visit，32 cooperation agreements signed by the two sides are dubbed（给…起绰号，把…称为）as the "contracts（合同） of the century" because they are enormous in value and cover a long period of time, he said.

"The energy cooperation covers such areas as petroleum, natural gas, nuclear power, electricity, coal and new sources of energy, and runs through the industry both of its up and down streams," he added.

小题1:Which country did Xi Jinping visit after Russain?

A. The USA.       B. Tanzania         C.Congo       D. South Africa

小题2:What is the best title of the passage?

A．Xi Jinping’s visit to Russian is a great success.

B．Xi Jingping visited four countries during Mar.22-30

C．Russia is the biggest friend of China.

D．China and Russia signed 32 "contracts of the century”.小题3:The energy cooperation of China-Russia doesn’t include__________.

A．nuclear power

B．petroleum

C．automobile

D．electricity小题4:What does the underlined word “consensus” mean?

A．general agreement and opinion

B．happiness and pride

C．some financial aid

D．China-Russia friendship小题5:What will the author probably write after the last paragraph?

A．The people of South Africa welcome the president of China

B．Xi Jinping will visit Barack Obama

C．Xi Jingping will fly back to Beijing.

D．Xi Jinping’s visit to Tanzania

由新生肉芽组织________、________坏死物的过程称为机化，最终形成________组织。

在Windows操作系统中，需要显示主机的TCP/IP的配置时，通常使用命令 (59) 。

A．ping

B．arp

C．netstat

D．ipconfig

在软件工程中，高质量的文档标准是完整性、一致性和( )。

A．统一性

B．安全性

C．无二义性

D．组合性