有明显G1期的细胞是()A、小鼠胚胎细胞 B、食管上皮细胞 C、四膜虫细胞 D、造血

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问题:

有明显G1期的细胞是()

A、小鼠胚胎细胞

B、食管上皮细胞

C、四膜虫细胞

D、造血干细胞

考点:生物学细胞生物学细胞生物学题库
题型:单项选择题

Mitzi
Lost Wednesday evening
French poodle(卷毛狗)called Mitzi
Brown, 5 years old, good reward(报酬)
Phone Barbara
555-4140 anytime
Bluey
Lost blue/ white Persian male cat
12 months old, friendly nature
Any info about Bluey
Large reward
Tom 555-2732 evenings
Pets-Cats
Burmese kittens 11 weeks old
2 female 4 male 1 Red
Others various colours
Gentle and registered(注册)$250
Sandy 555-0001 mornings
Pets-Dogs
Small dogs/ short legs/ long body
3 red 2 male 1 female
5 months old, registered
Sale $280
Phone Carl 555-9019 afternoons
小题1:If you want to buy a little dog, you can call            .
A.555-9019B.555-0001C.555-4140D.555-2732
小题2:If you tell the owner where Bluey is, you will be given           .
A.a gold medalB.a large pet
C.a great prizeD.a lot of money
小题3:The above four notices are all about            .
A.dogsB.catsC.petsD.selling pets
题型:单项选择题

Patricia Blues, 29, has a new aim in life: to keep drivers' hands on their steering wheels and off their cell phones. On November 2, 2007, Blues lived through a horrible experience. A motorist dialing a cell phone drove through a stop sign at 45 miles per hour and run into the side of Blues' car. Blues' 2-year-old daughter was killed immediately in the crash.

Blues has since dedicated her time to pushing for laws that would prevent this type of tragedy from happening again.

Cell phones are not the only distractions (分神) that cause accidents. Eating, changing CD, reading maps, talking to passengers, and just reaching for an object on the floor can be dangerous. Therefore, the emphasis should be on educating drivers to avoid all distractions. However, talking on cell phones might be easier to regulate than eating or changing music. At least 34 states have already passed laws to restrict cell phone use in moving cars. No state has banned it yet, but several U. S. cities have. Worldwide, 13 nations, including Australia, England, Germany, Japan and China have banned drivers' use of cell phones in moving cars.

To date, no scientific evidence has been published showing that talking on the phone affects driving safety. But according to a test by some high school students, "driving while on the phone does affect safety and probably shouldn't be done".

64. What happened to Patricia Blues last November? ________.

A. She was seriously injured in a car crash  

B. She lost her daughter in a road accident

C. She broke the traffic rules at a bus stop  

D. Her vehicle was destroyed by a motorbike

65. The tragedy was caused by ________.

A. Blues' lack of driving experience   

B. the motorist’s failure of seeing the stop sign

C. Blues' poor car conditions         

D. the motorist's absence of mind while driving

66. Patricia Blues' new goal of life is to persuade the government ________.

A. to prohibit the carrying of cell phones in cars  

B. to educate drivers to avoid all distractions

C. to ban talking on the phone while driving  

D. to study, harmful results of using cell phones

67. Which of the following is TRUE according to the text? ________.

A. Using cell phone while driving is easier to be controlled by law than other distractions

B. It is more important to make laws than educate drivers to be aware of driving safety

C. Driving while on the phone is firmly against only by some students from high school

D. It is extremely urgent for the cities with a large population to restrict using cell phones   

题型:单项选择题

石油产品中水分的存在状态是()。

A、悬浮状态

B、溶解状态及乳化状态

C、悬浮状态及乳化状态

D、悬浮状态、溶解状态及乳化状态

题型:单项选择题

骨折的功能复位标准中,下列哪项是错误的()

A.成人骨折成角不超过10°

B.儿童骨折成角不超过15°

C.成人骨折缩短不超过2cm

D.儿童下肢缩短不超过2cm

E.骨干横形骨折对位达1/3

题型:单项选择题

大陆漂移思想源起于()。

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