Answer: A B
Analysis:
Xiǎo Míng zhōngyú dàodá le shāndǐng, chénggōng dádàole mùbiāo.
小明终于到达了山顶，成功达到了目标。
Xiao Ming finally reached the mountaintop and successfully achieved the goal.
到达(Dào dá): primarily pertains to reaching a physical destination, such as arriving at a city, a building, or any other physical location.
达到(Dádào): is used more broadly to convey the idea of achieving a goal, reaching a certain level, or attaining a particular state. It is not limited to physical locations, encompassing reaching a certain standard, level of understanding, or performance.
Example:
Dào dá (到达)
Wǒmen zhōngyú dàodále Běijīng.
我们终于到达了北京。
We finally arrived in Beijing.
Fēijī yùjì zài xiàwǔ 3 diǎn dàodá jīchǎng.
飞机预计在下午3点到达机场。
The plane is expected to arrive at the airport at 3:00 PM.
Āndí fēicháng kāixīn, yīnwèi tā dàodále hǎitān.
安迪非常开心，因为他到达了海滩。
Andy is very happy because he arrived at the beach.
Dá dào (达到)
Pítè dádàole gōngsī běnyuè de xiāoshòu mùbiāo.
皮特达到了公司本月的销售目标。
Peter achieved the sales target set by the company for this month.
Zhè cì shǒushù de chénggōng lǜ dádàole 90%.
这次手术的成功率达到了90%。
The success rate of this surgery has reached 90%.
Wèile dádào gèng hǎo de zhuàngtài, yùndòngyuán xūyào cháng shíjiān xùnliàn.
为了达到更好的状态，运动员需要长时间训练。
Athletes need to train for a long time in order to reach a better state.