椭圆x225+y29=1的左、右焦点分别是F1、F2,若点M在椭圆上,且满足MF

题型:填空题

问题:

椭圆
x2
25
+
y2
9
=1
的左、右焦点分别是F1、F2,若点M在椭圆上,且满足 
MF1
MF2
,则△MF1F2面积为______.
考点:椭圆的性质(顶点、范围、对称性、离心率)
题型:填空题

选出加点字注音有误的一项(   )

A.欺骗(piàn)忧郁(yù)来临(lín)镇静(zhèn)

B.瞬息(shùn)怀恋(liàn)涉足(shè)丛林(cóng)

C.幽寂(yōu)伫立(zhù)足迹(jì)诱人(yòu)

D.萋萋(qī)污染(yǎn)叹息(tàn)路径(jìn)

题型:填空题

家庭电路中:

(1)对于人体来说,只有不高于 ______V的电压才是安全的,家庭电路的电压是 ______V;

(2)各用电器之间的连接方式是 ______;

(3)控制照明灯泡的开关应该与 ______(选填“火线”或“零线”)相连,照明灯泡与控制它的开关之间的连接方式是 ______;

(4)如果你家中的用电器突然全部停止工作,经检查发现是空气开关跳闸了,你认为原因可能是 ______(说出一种即可).

题型:填空题

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

A Language Programme for Teenagers

Welcome to Teenagers Abroad! We invite you to join us on an amazing journey of language learning.

Our Courses

Regardless of your choice of course, you’ll develop your language ability both quickly and effectively.

Our Standard Course guarantees a significant increase in your confidence in a foreign language, with focused teaching in all 4 skill areas----speaking, listening, reading and writing.

Our Intensive Course builds on our Standard Course, with 10 additional lessons per week, guaranteeing the fastest possible language learning (see table below).

Evaluation

Students are placed into classes according to their current language skills. The majority of them take on online language test before starting their programme. However, if this is not available, students sit the exam on the first Monday of their course.

Learning materials are provided to students throughout their course, and there will never be more than 15 participants in each class.

Arrivals and Transfer

Our programme offers the full package—students are take good care of from the start through to the very end. They are collected from the airport upon arrival and brought to their accommodation in comfort. We require the student’s full details at least 4 weeks in advance.

Meals/Allergies(过敏)/Special Dietary Requirements

Students are provided with breakfast, dinner and either a cooked or packed lunch(which consists of a sandwich, a drink and a dessert). Snacks outside of mealtimes may be purchased by the student individually.

We ask that you let us know of any allergies or dietary requirements as well as information about any medicines you take. Depending on the type of allergies and/ or dietary requirements, an extra charge may be made for providing special food.

When can a student attend Standard Course?()

A. 13:00-14:30 Monday.

B. 9:00-12:30 Tuesday

C. 13:00-14:30 Friday.

D. 9:00-12:30 Saturday.

题型:填空题

患者女性,25岁。1周前服用鱼胆后出现恶心、呕吐、腹痛、腹泻数次后好转。3天前出现乏力、尿量逐渐减少.昨日尿量约200ml,遂来院就诊。

查体:T37.5℃,BP167/110mmHg,贫血貌,眼睑浮肿,双下肢Ⅱ°凹陷性水肿。既住无高血压,糖尿病病史。

提示:进一步检查结果提示血钾6.8mmol/L,磷1.5mmol/L,CO2CP15mmol/L,白细胞10.2×109/L,Hh60g/L。宜进一步采取的措施是()。

A.腹膜透析

B.紧急输血

C.5%碳酸氢钠静脉滴注

D.中药灌肠

E.血液透析

F.静脉应用钙剂

题型:填空题

第15—18题为套题: 新《保险法》第十二条规定,人身保险是以人的寿命和身体为保险标的的保险,财产保险是以财产及其有关利益为保险标的的保险。最新统计数据显示,2008年我国国内生产总值GDP为30万亿元,总人口为13.3亿,保费收入为9784亿元,其中寿险业务为6658亿元,健康保险业务为585亿元,意外伤害保险业务为204亿元,财产险业务为2337亿元。

2008年我国保险深度为()。

A.3.26%

B.5%

C.7.36%

D.32.6%

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