统计数据显示,2017年上半年，我国保险业共实现保费收入23140. 15亿元，同比增长23%。人身保险业务实现保费收入18287. 71亿元，同比增长26. 03%；其中，寿险业务实现保费收入15209. 57亿元，同比增长29.32%；健康险业务保费收入2615. 69亿元，同比增长10. 87%。材料说明（  ）

①我国保险结构有待完善

②我国保险业高度发达

③我国居民保险意识提升

④我国商业保险重在保障居民人身安全

如图是滑动变阻器的结构和连入电路的示意图，当滑片P向右滑动时，连入电路的电阻变小的是（   ）

如图是有关种子呼吸的三个实验，请回答：

 

阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
A
Live Music—-Late Night Jazz
    Enjoy real American jazz from Herbie Davis, the famous trumpet(号手). He is known to play well into the early hours, so don't want to get much sleep.

PLACE: The Jazz Club     DATES: 15—-23 June PRICE: ￥100-150        TIME: 10 p.m. till late!   TEL: 4668736

Scottish Dancing
    Scottish dancing is nice and easy to learn. The wonderful dance from England will be given.

PLACE: Jack Stein's      DATES: 10-20 May PRICE: ￥150           TIME: 7-10 p.m.  TEL: 4021877

Shows—-Anhui Museum
    There are 12,000 pieces on show here. You can see the whole of Chinese history.

PLACE: Anhui Museum    DATES: 1Mar-30 Jun PRICE: ￥130            TIME: Mon-Fri 9 a.m-5 p.m.   Saturday 9 a.m.-9 p.m. TEL: 4886888

    Your pen friend is coming from Australia to your city for a holiday. You send him this E-mail to tell him something about the hotels.

SUN HOTEL Dates                Prices(a night) 1Oct-31Dec             ￥168 1Jan-31Mar             ￥148 1Apr-30Apr(closed)       …… 1May-31May            ￥188 1Jun-30Sep              ￥208 TEL: 4686788   E-mail: Li Hong@163.com.

ROSE HOTEL Prices(a night) ￥198 ￥178 …… ￥218 ￥248

已知函数y=2sin$\left(2x+\Phi \right)\left(\left|\Phi \right|<\frac{\mathrm{\pi }}{2}\right)$的图象经过点（0，1），则该函数的一条对称轴方程为（　　）