题目1单选题
极限<img src="https://tihai-oss-cloud.itihey.com/img/8e91983df80c89d08022f0730a2e83e0.png">_____A. <img src="https://tihai-oss-cloud.itihey.com/img/8e82c3cbbab2e81bcd71cc41528a7e6f.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/ae0a33d222c053eec030967a474e0289.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/df5f9fe8efc1809d930a594d4ffb48f7.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/54d4111f3701b62f4e152ab7eef6daaa.png">