【单选题】HSLA steel is a product of recent technology aimed at producing strong, lightweight steel at a price competitive with that of carbon steels. What does HSLA stand for .
【简答题】Spot Dictation (25 points, 5 points each) Directions: Listen to the radio program and fill in the blanks with the exact words you hear. V: What recent product or service do you think is 1) ? M3: Er. i...
【简答题】改错。 1. Jim passed the driving test, it surprised everybody in the office. _______ 2. Which is known to all, he is the best student. _______ 3. It is such a big stone that nobody can lift. _______ 4. O...