题目1A. <img src="https://tihai-oss-cloud.itihey.com/img/bf4a76e4591fd9bcab482faef8169d48.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/f9f97d31958831e765e556c16352d6ff.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/bbbddaa52890c58908abdb20ed76a814.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/92851d3fcb6605a57acc6ef662fdd7fe.png">