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【简答题】
Surviving Hurricane Sandy( 飓风桑迪) Natalie Doan,14, has always felt lucky to live in Rockaway, New York. Living just a few blocks from the beach, Natalie can see the ocean and hear the waves from her house. “It’s the ocean that makes Rockaway so special,” she says. On October 29, 2012, that ocean turned fierce. That night, Hurricane Sandy attacked the East Coast, and Rockaway was hit especially hard. Fortunately, Natalie’s family escaped to Brooklyn shortly before the city’s bridges closed. When they returned to Rockaway the next day, they found their neighborhood in ruins. Many of Natalie’s friends had lost their homes and were living far away. All around her, people were suffering, especially the elderly. Natalie’s school was so damaged that she had to temporarily attend a school in Brooklyn. In the following few days, the men and women helping Rockaway recover inspired Natalie. Volunteers came with carloads of donated clothing and toys. Neighbors devoted their spare time to helping others rebuild. Teenagers climbed dozens of flights of stairs to deliver water and food to elderly people trapped in powerless high-rise buildings. “My mom tells me that I can’t control what happens to me,” Natalie says. “but I can always choose how I deal with it.” Natalie’s choice was to help. She created a website page matching survivors in need with donors who wanted to halp. Natalie posted introduction about a boy named Patrick, who lost his baseball card collecting when his house burned down. Within days, Patrick’s collection was replaced. In the coming months, her website page helped lots of kids: Christopher, who received a new basketball; Charlie, who got a new keyboard. Natalie also worked with other organizations to bring much-need supplies to Rockaway. Her efforts made her a famous person. Last April, she was invited to the White House and honored as a Hurricane Sandy Champion of Change. Today, the scars(创痕)of destruction are still seen in Rockaway, but hope is in the air. The streets are clear, and many homes have been rebuilt. “I can’t imagine living anywhere but Rockaway,” Natalie declares. “My neighborhood will be back, even stronger than before.”
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【单选题】关于孕妇保健指导,不妥的内容是()。
A.
妊娠期前3个月及后3个月避免性交以防止流产及早产
B.
睡眠时多取右侧卧位
C.
饮食多样化
D.
避免烟酒
【简答题】小明探究凸透镜成像规律的实验装置如图所示。焦距为10cm的凸透镜固定在光具座上50cm刻度线处,光屏和点燃的蜡烛位于凸透镜两侧。小明将蜡烛移至20cm刻度线处,移动光屏直到光屏上出现烛焰清晰的像,则该像是倒立、 的实像。保持此时蜡烛、凸透镜位置不变,将凸透镜换为焦距为20cm的凸透镜,移动光屏直到光屏上出现烛焰清晰的像,则该像是倒立、 的实像。
【简答题】小英探究凸透镜成像规律的实验装置如图所示,其中焦距为12cm的凸透镜固定在光具座上,位于50cm刻度线处,光屏和点燃的蜡烛位于凸透镜两侧。小英将蜡烛移至20cm刻度线处,移动光屏,直到光屏上出现了烛焰清晰的像,则该像是倒立、_______的、(选填“放大”“缩小”或“等大”)________像(选填“实”或“虚”)。小英将蜡烛移至40cm刻度线处时,她通过凸透镜看到了烛焰的像,则该像是______...
【单选题】●设一个包含N 个顶点、E 条边的简单无向图采用邻接矩阵存储结构(矩阵元素 A[i][j]等于1/0 分别表示顶点i与顶点 j 之间有/无边),则该矩阵中的非零元素数目为 (60)。 (60)
A.
N
B.
E
C.
2E
D.
N+E
【单选题】A project manager and her team worked together to develop a work breakdown structure.However,it seems project team members are doing work that is not included in the work breakdown structure. The purp...
A.
guide the cost estimate for a project,not how the work is done。
B.
provide senior management with a high level view of the project scope。
C.
include the work required to create the products of the project。
D.
Include the total project scope or all of the work that must be done to complete the project。
【简答题】beautician      electrician        magician           musician politician       physician         technician          comedian
【单选题】在探究凸透镜成像规律的实验中,小聪选用了焦距为10cm的凸透镜。他将凸透镜固定在光具座上50cm刻度线处,将点燃的蜡烛放置在光具座上35cm刻度线处,当光屏一动到如图所示刻度线处时,在光屏上恰好呈现出烛焰清晰的像。如果将蜡烛从图中位置移动,关于该实验下列说法正确的是(  )
A.
蜡烛向左移动2cm,光屏应向右移动到适当位置才能呈现烛焰清晰的像
B.
蜡烛向右移动10cm,光屏应向右移动到适当位置才能呈现烛焰清晰的像
C.
蜡烛向右移动2cm,光屏应向右移动到适当位置才能呈现烛焰清晰的像
D.
蜡烛移到20cm刻度线处,光屏应移动到70cm刻度线处才能呈现烛焰清晰的像
【简答题】beautician      electrician        magician           musician politician       physician         technician          comedian
【单选题】哺乳结束后,母亲应将婴儿抱起,轻拍背部,其目的是( )
A.
促进消化和吸收
B.
防止溢乳 ,促进舒适
C.
促进断奶
D.
避免哭闹
【单选题】内存一般按_分成许多存储单元,每个存储单元都有一个编号,称为内存地址。
A.
B.
C.
比特
D.
字节
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