营养性巨幼细胞贫血骨髓象中哪项是错误的()A．骨髓增生明显活跃 B．各期幼红细胞均巨

下列选项中，不是关节结核的表现（）

A.最常累及髋关节和膝关节

B.邻近骨骼骨质疏松

C.周围组织形成冷性脓肿

D.关节面的破坏开始于关节的承重面

E.病变愈合后可有关节强直

泻下适用于

A．正气亏虚者

B．服毒1天者

C．毒物已进入肠道，已被吸收

D．毒物已进入肠道，未被吸收

E．服用腐蚀性毒物的患者

阅读理解。

     Going on a date can be a nightmare for the best of us. But now a pair of 'social X-Ray' glasses

promises to tell you exactly what the other person is thinking-and when you should stop talking.

     The glasses have a built-in camera which monitors the other person's facial expressions and matches

them up with 24 known features which convey emotions. It will then tell the individual via an earpiece and

lights on the glasses what their date is thinking. In a traffic light-style system, a red light means negative,

yellow means they are a bit interested and green means your date is happy. The glasses are under

development at present by researchers at the Massachusetts Institute of Technology's Media Lab.

     They say that wearing them during a conversation with another person is like having an 'extra sense'

that they are bored or losing interest.

     The eyewear was developed for people suffering from autism (孤独症) who have much difficulty

interacting with others, but now the team behind it has seen wider applications. It works thanks to a

camera the size of a grain of rice which is put into the glasses frame and connected via a wire to a small

computer which can be attached to the user's body. The camera monitors how long and how often 24

'feature points' appear on the subject's faces which are then analyzed by software developed by the MIT

team.

     This data is then compared with a bank of expressions and the computer tells the wearer what is

going on via the earpiece and the traffic light system.

     So far the glasses are still a job in progress and have been accurate just 64 per cent of the time, a

figure which is expected to improve with further tests.

1. The passage mainly tells us that _______.

A. going on a date can be a nightmare for the best of us

B. scientists are showing more and more concern to people suffering from autism

C. the glasses will be more and more popular

D. the scientists are working on a new type of glasses to help people going on a date

2. Which of the following is true according to the passage? 

A. The glasses were initially intended for helping people going on a date.

B. The glasses are widely used and have achieved great success.

C. The built-in camera in the glasses is of great importance.

D. People wearing the glasses are sure to have a good date.

3. The underlined word ''interacting'' in Paragraph 4 can be replaced by _______ . 

A. communicating

B. reacting

C. affecting

D. acting

4. Which is right according to Paragraph 2 ?  

A. Red = negativeyellow = neutral        green = positive

B. Red = positiveyellow = neutral        green = negative

C. Red = neutralyellow = positive       green = negative

D. Red = negativeyellow = positive       green = neutral

5. The passage is probably from _______ . 

A. a guide book      

B. an autobiography book         

C. a leaflet          

D. a scientific report

多轴旋翼飞行器通过改变控制飞行轨迹。（）

A.总距杆

B.转速

C.尾桨