C1和C2并联，下列说法不正确的是（）。A.C1和C2所承受的电压相等 B.C1和C

某校中学生参加野外生存训练活动，部分学生把一周内换下来的衣服带回家让父母洗。对他们的行为，认识正确的是[ ]

A．是自立的表现                       

B．可以节省时间搞好文化学习

C．独立生活能力太差                   

D．他们应该拒绝父母的任何帮助

对1929年爆发的经济危机，有人描述当时的情景说：“人们常常谈到社会变革，成千上万的人的确认为，被剥夺者和饥饿的人们将反抗把他们带进这种绝望境地的政府和经济制度。”罗斯福新政的措施中直接有利于防止上述情景出现的有

①整顿银行、统制货币、改革银行体系 ②保障工人的一些基本权利

③减少耕地面积和农产品产量 ④实施《社会保险法》   

A．①②    

B．②③    

C．③④    

D．②④

验光中，用±0.25DC交叉柱镜对-3.00DS/-0.75DC*90镜度作轴向调试翻转交叉柱镜两面，其中交叉柱镜的正轴在45的一面视力提高，应将测试的（）。

A.轴向改为80

B.轴向改为100

C.镜度改为-3.00DS/-0.25DC*90

D.镜度改为-3.25DS/-0.25DC*90

下列拖动操作中，属于文件复制操作的有( )。

A．同一磁盘内拖放

B．同一磁盘内拖放，同时按下Ctrl键

C．不同磁盘间拖放

D．不同磁盘间拖放，同时按下Shift键

Christmas is the anniversary of the birth of Christ, generally celebrated on December 25. It is one of the chief festivals of the Christian calendar and is (51) a social and family holiday. Christmas customs vary from (52) and among groups of different national (53) In most areas, however, homes and public places are (54) with evergreens, Christmas trees, (55) lights, and glittering ornaments. It is the busiest time of the year for merchants, and shops are filled (56) lavish displays and merchandise of all sorts. People send Christmas cards and buy gifts for their families and friends. Children look forward to (57) Santa Claus. They (58) their stockings on Christmas (59) and on Christmas morning they discover the gifts that have been left for them during the night. In the afternoon, families gather to (60) presents and to share the traditional Christmas dinner.

55().

A. coloring

B. colored

C. colors of

D. colorless