(____)1. A. mouse       B. tiger         C. ship

(____)2. A. wake        B. pick          C. sleep

(____)3. A. happy       B. book          C.sad

(____)4. A. from        B. water         C. coffee

(____)5. A. strong      B. weak          C .run

电子计算器工作时的电流约为100mA，合　 ____A，对人体的安全电压是 ____

—Yes. But he can speak a little.