Directions: Translate the following text from English into Chinese. Write your translation on ANSWER SHEET 2. Getting a proper amount of rest is absolutely essential for building your energy resources. If you frequently work far into the night or have a poor sleep, it stands to reason that you may start to feel a little run down. Though everybody is different, most people need at least seven to eight hours of sleep per night in order to function at their best. If you have been lacking energy, try going to bed earlier at night. If you can wake up feeling well- rested, it will be an indication that you are starting to get an appropriate amount of sleep at night. If you sleep more than eight hours every night but still don’t feel energetic, you may actually be getting too much sleep. Once in a while, you are bound to have nights where you don’t get an adequate amount of sleep. When your schedule permits you can also consider taking a short sleep during the day, for sometimes taking a nap is the perfect way to recharge your batteries.
Driving through snowstorm on icy roads for long distances is a most nerve-racking experience. It is a paradox that the snow, coming (1) gently, blowing gleefully in a high wind, all the while (2) down a treacherous carpet, freezes the windows, (3) the view. The might of automated man is (4) . The horses, the powerful electrical systems, the deep-tread tires, all go (5) nothing. One minute the road feels (6) ,and the next the driver is sliding over it, light as a (7) ,in a panic, wondering what the heavy trailer trucks coming up (8) the rear are going to do. The trucks are like (9) when you have to pass them, not at sixty or seventy (10) you do when the road is dry, but at twenty-five and thirty. (11) their engines sound unnaturally loud. Snow, slush and (12) of ice spray from beneath the wheels, obscure the windshield, and rattle (13) your car. Beneath the wheels there is plenty of (14) for you to slide and get mashed to a pulp. Inch (15) inch you move up, past the rear wheels, the center wheels, the cab, the front wheels, all (16) too slowly by. Straight ahead you continue, (17) to cut over sharply would send you into a slip, (18) in front of the vehicle. At last, there is (19) enough, and you creep back over, in front of the truck now, but (20) the sound of its engine still thundering in your ears. 19()
A. might
B. distance
C. air
D. power
根据乔姆斯基20世纪50年代建立的形式语言的理论体系,语言的文法被分为四种类型,即:O型(上下文有关文法)、1型(上下文相关文法)、2型(上下文无关文法)和3型(正规文法)。其中2型文法与 (66) 等价,所以有足够的能力描述多数现今程序设计的语言的句法结构。一个非确定的有限自动机必存在一个与之等价 (67) 。从文法描述语言的能力来说, (68) 最强, (69) 最弱,由四类文法的定义可知: (70) 必是2型文法。 (66)处填()。
A. 确定的有限自动机
B. 图灵机
C. 非确定的下推自动机
D. 非确定的有限自动机
E. 有限自动机 线性有限自动机