【解析】电源电动势为3.0V,内阻不计,L1两端的电压为3.0V,由图乙可知,此时的电流为0.25A,所以L的电阻R10,259=129,散A项错误;L1消耗的电功率为P=U=3.0×0.25W0.75W,故B项正确;在图乙上做出电阻R的伏安特性曲线如图所示:A0.300.1O1.02.03.0U由于R与L2串联,所以二者的电流是相等的,由图可以读出,此时二者的电压都是1.5V时,二者电压的和等于3.0V,此时的电流为0.2,A,所以L2的电阻R2=29=7.50,故C项正确;L2消耗的电功0.2率为P=U′=1.5×0.2W=0.3W,故D项错误

mask my weariness, and requested him the same thinUnexpectedly, he took out his mobile phone for me withouthesitation or any probing questions. Dancing in his eyeswas the real kindness that I had been struggling to seek forso long. From that day on, I began helping other strangersin distress, just like the poor-looking but kind man, withthe aim of passing kindness and melting the ice in manypeople’ s hearts第三节One possible versionParagraph 1At that point I saw a young mother with her ttto kids. Ithought that a beautiful woman with charming blue eyesmust be willing to help me. So, with great expectation, Itrotted briskly towards her with an appropriate smile on myface,and requested courteously if she could be kind enoughto make a phone call for me. However, what I saw was awoman's face disfigured by frowns and what I heard was a.sound of dismay and suspicion under her breath. Without aword, she pulled her kids to escape from me, as if scareda murderer. I stood there, motionless, with a blank faceand a sinnking heartParagraph 2Finally a man tearing a cheap T-shirt and dirty jeaneseemed to notice me. I squeezed a smile though it failed to

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