选词填空:automatic; blinking; concerning; confounded; explanatory; stiffly; stammer; thrill; glanced; slip1. It’s his ______ answer, which is likely to be more reliable.2.His eyes narrowed and grew hard, then he ______ smiled.3. This book deals with questions ______ China’s diplomatic policies.4. Her strange behavior ______ everyone in the hall.5. The lecture was so boring, so I was about to ______ away quietly.6.Because of his ______ , Albert dreaded public speaking.7. Why are you ______ at me constantly?8.Each section has an ______ introduction and representative color illustrations.9.She ______ around the shop until her eyes finally reached mine.10.Natural dark tunnels offer excitement and ______ to adventurers.