主要约束性指标要分解落实到有关部门和各省、自治区、直辖市，具有一定的（）。 A.措施

下列微粒中，能够保持氢气化学性质的是         

A．H

B．H⁺

C．H₂

D．H₂O

In Vietnam(越南), Tet-trung-Thu, or Mid- autumn Festival, is one of the most popular holidays. It is held on the 15th day of the 8th month in lunar calendar

Vietnamese families plan their activities around their children on this special day. In a Vietnamese story, parents were working so hard to prepare for the harvest that they left the childen playing by themselves.  To make up for the lost time, parents would use the Aid-Autumn Festival as a chance to show their love and than for their children.

As a result, the Mid- autumn Festival is also called the Children’s Festival.  In the USA, this tradition continues in many Vietnamese- American families.  Tet-trung-Thu, activities are often centered on Children and education.  Parents buy lanterns for their children so that they can take part in a lantern parade at dawn.  Lanterns mean brightness, while the parade means success in school.  Vietnamese markets sell different kinds of lanterns, but the most popular children’s lantern is the star lantern. Other children’s activities includes arts and crafts(手工艺) in which children make face mas and lanterns.  Children also perform traditional Vietnamese dances for grown-ups and take part in contests for prizes and scholarships. Unicorn(麒麟) dancers are also very popular at Tet-trung-Thu festivities.

Like the Chinese, Vietnamese parents tell their children folk stories and serve moon-cakes and other special treats under the bright moon. A favorite folk story is about a carp(鲤鱼) that wanted to bee a dragon.  The carp worked hard and finally changed itself into a dragon. Parents use this story to encourage their children to work hard so that they can bee whatever they want to be.

1. The Tet-trung-Thu Festival is held ________.

A. in China and other Asian countries.           B. in Vietnamese-American families.

C. all over the world, except Vietnam.            D. Across the United States.

2.In Both Vietnam and China, on Mid-autumn Festival people would ___________.

A. eat moon-cakes       B. buy lanterns for children.

C. take part in contests.   D. buy a carp

3.What is the center of the Mid-Autumn festival in Vietnam?

A. Family get-together.                           B. Children on education.

C. Relaxation and fun in the middle of the year.

D. parents having more time with their children.

4.According to the passage, parents tell their children folk stories, because __________.

A. children like listening to folk stories in the evening.

B. parents want to show their love for their children.

C. parents want to teach the children to work hard.

D. parents want to make up for the lost time.

说明为什么熔体中阴离子集团不容易形成玻璃。

SQL语言中，要删除模式ABC并同时删除其下属的数据库对象，相应的SQL语句是DROP SCHEMA ABC______。

让岗位上的员工定期地、有计划地流动，以提高知识技能，使之成为复合型人才。此项工作适用于( )。

A．员工职业生涯规划

B．员工培训开发计划

C．人员配备计划

D．人员晋升计划